Chapter 3.

1: Number Systems (MCQ)

All Years All Boards MCQ cÖ‡kœvËi (cÖwZwUi b¤^i = 1)
(1) 5 Gi 2-Gi cwic~iK gvb KZ? (D.B. 2016)
(K) 1101 (L) 1001 (M) 1010 (N) 1011
mgvavbt 5 Gi Pvi weU evBbvwi gvb = 0101
 1 Gi cwic~iK = 1010
+1
 2 Gi cwic~iK = 1011 (Dt)
(2) (1F)16 Gi mv‡_ 1 †hvM Ki‡j KZ n‡e? (S.B. 2016)
(K) (1F)16 (L) (2F)16 (M) (20)16 (N) (21)16
mgvavbt mv‡qw›UwdK K¨vjKz‡jU‡i wb‡Pi wb‡`©kbv g‡Zv evUb¸‡jv Pvc‡Z _vK‡j DËi cvIqv hv‡et
MODEBASE-NHEX1F+1 = (20)16 (Dt)
we.`ª.t msL¨vi iƒcvšÍi nv‡Z-Kj‡gI Kiv hvq| wKš‘ MCQ Gi Rb¨ AwZ Aí mgq eiv× _v‡K hv
A‡b‡Ki c‡ÿ nv‡Z-Kj‡g Kivi Rb¨ h‡_ó bq| ZvB K¨vjKz‡jUi e¨env‡ii civgk© †`qv n‡jv|
(3) evBbvwi †hv‡M 1 + 0 + 1 = ? (S.B. 2016)
(K) 10 (L) 01 (M) 00 (N) 11
mgvavbt MODEBASE-NBIN1+0+1 = 10 (Dt)
(4) A±vj msL¨v c×wZ‡Z 177 Gi c‡ii msL¨vwU KZ? (C.B. 2016)
(K) 178 (L) 180 (M) 200 (N) 270
mgvavbt MODEBASE-NOCT177+1 = 200 (Dt)
(5) (BFE)16 Gi mgZzj¨ A±vj gvb KZ? (Dj.B. 2016)
(K) (5774)8 (L) (5776)8 (M) (5976)8 (N) (1011111111101)8
mgvavbt MODEBASE-NHEXBFE = OCT(5776)16 (Dt)
(6) (12)10 Gi mgKÿ evBbvwi gvb †Kvb&wU? (C.B. 2016)
(K) (1101)2 (L) (1100)2 (M) (1111)2 (N) (1010)2
mgvavbt MODEBASE-NDEC12 = BIN(1100)2 (Dt)
(7) †n·v‡Wwm‡g‡j 4D Gi mgZzj¨ `kwgK (†Wwm‡gj) gvb KZ? (M.B. 2016)
(K) 17 (L) 52 (M) 64 (N) 77
mgvavbt MODEBASE-NHEX4D = DEC77 (Dt)
(8) (A0)16 Gi `kwgK mgZzj¨ gvb KZ? (M.B. 2016)
(K) 80 (L) 100 (M) 160 (N) 256
mgvavbt MODEBASE-NHEXA0 = DEC160 (Dt)
(9) GKwU Kj‡gi `vg (110111)2 n‡j †Wwm‡g‡j KZ? (M.B. 2016)
(K) 54 (L) 55 (M) 58 (N) 59
mgvavbt MODEBASE-NBIN110111 = DEC55 (Dt)
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(10) evsjv eY©gvjv †Kvb& †KvWfz³? (R.B. 2016, D.B. 2024)
(K) BCD (L) ASCII (M) UNICODE (N) EBCDIC
wUcm&t BDwb‡Kv‡W evsjv fvlvmn we‡k¦i mKj fvlv‡K †KvWfz³ Kiv n‡q‡Q|
(11) msL¨v c×wZ‡K cÖavYZ Kq fv‡M fvM Kiv hvq? (Ct.B. 2016)
(K) 2 (L) 3 (M) 8 (N) 10
wUcm&t msL¨v c×wZ‡K cÖavYZ cwRkbvj I bb-cwRkbvj GB `yB fv‡M fvM Kiv hvq|
(12) †Wwm‡gj msL¨v c×wZi wfwË KZ? (J.B. 2016)
(K) 16 (L) 10 (M) 8 (N) 2
wUcm&t 0 †_‡K 9 ch©šÍ GB 10wU wWwRUB †Wwm‡gj msL¨v c×wZi wfwË|
(13) wg: myexi GKRb Qv·K Zvi eqm wRÁvmv Kivq †m ejj, evBbvwi‡Z Zvi eqm 10010| Zvi GB
msL¨vi mv‡_ (1011)2 †hvM Ki‡j evBbvwi‡Z †hvMdj KZ n‡e? (B.B. 2016)
(K) 11001 (L) 11101 (M) 10011 (N) 10111
mgvavbt MODEBASE-NBIN10010+1011 = 11101 (Dt)
(14) BCD †KvW KZ we‡Ui? (B.B. 2016, R.B. 2024)
(K) 2 (L) 4 (M) 8 (N) 16
wUcm&t `kwgK msL¨vi 0 †_‡K 9 ch©šÍ cÖwZwU As‡Ki mgZzj¨ Pvi weU evBbvwi gvb‡K BCD †KvW e‡j|
(15) (72)10 Gi BCD †KvW †Kvb&wU? (B.B. 2016)
(K) (11110)2 (L) (111001)2 (M) (111010)2 (N) (01110010)2
mgvavbt 7 Gi Pvi weU evBbvwi gvb = 0111 Ges 2 Gi Pvi weU evBbvwi gvb = 0010
myZivs (72)10 = (01110010)2 (Dt)
(16) (78)10 Gi BCD gvb KZ? (R.B. 2016)
(K) 01111001 (L) 01111000 (M) 01101000 (N) 01101100
mgvavbt 7 Gi Pvi weU evBbvwi gvb = 0111 Ges 8 Gi Pvi weU evBbvwi gvb = 1000
myZivs (78)10 = (01111000)BCD (Dt)
(17) †Kvb& †KvW `kwgK msL¨v‡K evBbvwi msL¨vq iƒcvšÍi K‡i? (Dj.B. 2016)
(K) ASCII (L) EBCDIC (M) UNICODE (N) BCD
wUcm&t `kwgK msL¨vi 0 †_‡K 9 ch©šÍ `kwU wWwRU‡K BCD †Kv‡Wi gva¨‡g evBbvwi msL¨vq iƒcvšÍi Kiv
nq|
(18) ASCII-8 †Kv‡W msL¨vm~PK weU KZwU? (R.B. 2016)
(K) 2 (L) 4 (M) 8 (N) 16
wUcm&t ASCII-8 †Kv‡Wi evg w`‡Ki 4 weU‡K †Rvb weU Ges Wvb w`‡Ki 4 weU‡K msL¨vm~PK weU e‡j|
(19) wkÿK Qv·K †ivj bs wRÁvmv Kij| QvÎwU evBbvwi c×wZ‡Z †ivj bs 1101 ejj| DÏxc‡K
D‡jøwLZ msL¨vi mv‡_ (1001)2 Gi †hvMdj KZ? (C.B. 2016)
(K) (01100)2 (L) (10110)2 (M) (10010)2 (N) (11110)2
mgvavbt MODEBASE-NBIN1101+1001 = 10110 (Dt)
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(20) DÏxc‡Ki †ivj bs Gi mgKÿ msL¨v n‡jv- (C.B. 2016)
i. (13)10 ii. (11)16 iii. (15)8 wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
mgvavbt (1101)2 = (13)10 = (15)8  (11)16 | myZivs DËi n‡e i I iii
(21) AvjdvwbD‡gwiK †WUv Av`vb-cÖ`v‡bi Rb¨ e¨eüZ nq- (R.B. 2016)
i. ASCII Code ii. EBCDIC Code iii. UNICODE wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t AvjdvwbD‡gwiK †WUv Dc‡ii me¸‡jv †Kv‡W e¨eüZ nq|
(22) 762 msL¨vwU n‡Z cv‡i- (C.B. 2016)
i. `kwgK ii. A±vj iii. †n·v‡Wwm‡gj| wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t Dc‡ii me¸‡jv msL¨v c×wZ‡Z 7, 6, 2 A¼¸‡jv i‡q‡Q|
(23)(– 42)10 msL¨vwUi Dc¯’vcbvq e¨eüZ MVb n‡jv- (B.B. 2016)
i. cÖK…Z gvb MVb ii. 1-Gi cwic~iK MVb iii. 2-Gi cwic~iK MVb| wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t (– 42)10 msL¨vwUi Dc¯’vcbvq Dc‡ii me¸‡jv MVb e¨eüZ nq|
(24) cwRkbvj msL¨v c×wZ‡Z †Kvb GKwU msL¨vi gvb wbY©q Kivi Rb¨ `iKvi- (Ct.B. 2016)
i. msL¨vwU‡Z e¨eüZ A¼¸‡jvi wbR¯^ gvb ii. msL¨vwU‡Z e¨eüZ A¼¸‡jvi ¯’vbxq gvb
iii. msL¨v c×wZi †eR ev wfwË| wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t cwRkbvj msL¨v c×wZ‡Z Dc‡ii me¸‡jv gvb `iKvi nq|
(25) evsjv fvlv‡K Kw¤úDUv‡i AšÍfz©³ Kivi Rb¨ eZ©gv‡b †Kvb& ai‡Yi †KvW e¨eüZ nq? (S.B. 2017)
(K) BCD (L) ASCII (M) EBCDIC (N) UNICODE
wUcm&t BDwb‡Kv‡W evsjv fvlvmn we‡k¦i mKj fvlv‡K †KvWfz³ Kiv n‡q‡Q|
(26)(1010)2 Gi mgZzj¨ gvb- (C.B. 2017)
i. (10)10 ii. (12)8 iii. (14)16 wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) ii I iii (M) i I iii (N) i, ii I iii
mgvavbt (1011)2 = (10)10 = (12)8  (14)16 | myZivs DËi n‡e i I ii
(27) 111 msL¨vwU n‡Z cv‡i- (B.B. 2017)
i. evBbvwi ii. A±vj iii. †Wwm‡gj| wb‡Pi †Kvb&wU mwVK?
(K) i (L) iii (M) i I iii (N) i, ii I iii
wUcm&t Dc‡ii me¸‡jv msL¨v c×wZ‡Z 1 A¼ i‡q‡Q|
(28) mKj gvB‡µv Kw¤úDUv‡i Bs‡iwR eY©‡K AšÍf©~³ Kiv hvq- (Ct.B. 2017)
i. ASCII Øviv ii. EBCDIC Øviv iii. Unicode Øviv| wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t Dc‡ii me¸‡jv †KvW Øviv Bs‡iwR eY©‡K Kw¤úDUv‡i AšÍf©~³ Kiv hvq |
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(29) Kw¤úDUvi wkÿK Rbve mwdK m¨vi †ev‡W© (77)8 msL¨vwU wjL‡jb| DÏxc‡Ki D‡jøwLZ msL¨vwUi
`kwgK msL¨v n‡jv- (J.B. 2017)
(K) 56 (L) 63 (M) 64 (N) 77
mgvavbt MODEBASE-NOCT77 = DEC63 (Dt)
(30)DÏxc‡Ki msL¨vwUi cieZ©x msL¨v †Kvb&wU? (J.B. 2017)
(K) (78)8 (L) (100)8 (M) (200)8 (N) (777)8
mgvavbt MODEBASE-NOCT 77+1 = (100)8 (Dt)
(31) wg. AvwZK Kvgvj‡K ejj, “†Zvgvi eqm KZ?Ó Kvgvj ejj †h Zvi eqm (101101)2| Kvgv‡ji
eq‡mi mgKÿ msL¨v n‡jv- (Dj.B. 2017)
(K) (25)8 (L) (35)8 (M) (55)8 (N) (65)8
mgvavbt MODEBASE-NBIN101101 = OCT 55 (Dt)
(32)`k eQi ci Kvgv‡ji eqm KZ n‡e? (Dj.B. 2017)
(K) (101011)2 (L) (101110)2 (M) (101111)2 (N) (110111)2
mgvavbt MODEBASE-NBIN101101+1010 = (110111)2 (Dt)
we.`ª.t `k eQi ci gv‡b, †Wwm‡g‡j 10 = evBbvwi‡Z 1010 nq|
(33) c¨vwiwU weUhy³ †KvW KZ we‡Ui? (D.B. 2017)
(K) 3 (L) 4 (M) 7 (N) 8
(34) wfwËi Ici wbf©i K‡i msL¨v c×wZ KZ cÖKvi? (J.B. 2017)
(K) 2 (L) 3 (M) 4 (N) 5
wUcm&t wfwË wbf©i PviwU msL¨v c×wZ n‡jv evBbvwi, A±vj, †Wwm‡gj Ges †n·v‡Wwm‡gj|
(35) A±vj msL¨vi †eR KZ? (Dj.B. 2017)
(K) 2 (L) 8 (M) 10 (N) 16
wUcm&t 0 †_‡K 7 ch©šÍ GB 8wU wWwRUB A±vj msL¨v c×wZi wfwË|
(36) (1110.11)2 Gi mgKÿ †n·v‡Wwm‡gj e¨vL¨v †Kvb&wU? (D.B. 2017)
(K) E.3 (L) E.8 (M) E.C (N) C.E
mgvavbt (1110)2 = (E)16 Ges (.11)2 = (.1100)2 = (.C)16| myZivs (1110.11)2 = (E.C)16 (Dt)
(37) (100)2 Ges (AA)16 Gi †hvMdj KZ? (Ct.B. 2017)
(K) 1AA (L) 1B (M) AF (N) AE
mgvavbt MODEBASE-NHEX4+AA = (AE)16 (Dt) [ (100)2 = (4)16]
(38) ASCII-8 †Kv‡Wi gva¨‡g KZwU AwØZxq wPý‡K wbw`©ó Kiv hvq? (C.B. 2017)
(K) 128 (L) 256 (M) 512 (N) 65536
8
mgvavbt ASCII-8 n‡jv AvU we‡Ui| myZivs †gvU wfbœ wPý ivLv hv‡e 2 = 256wU| (Dt)
(39) `kwgK msL¨v 12 Gi 2’s complement (2-Gi cwic~iK) KZ? (R.B. 2017)
(K) 00001100 (L) 11111100 (M) 11110011 (N) 11110100
mgvavbt 12 Gi AvU weU evBbvwi gvb = 00001100
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  1 Gi cwic~iK = 11110011
+1
 2 Gi cwic~iK = 11110100 (Dt)
(40) 1, 8, F avivwUi cieZx© gvb KZ? (Ct.B. 2017)
(K) A (L) B (M) 16 (N) 22
mgvavbt 1, 8, F(15) avivwUi cÖwZwU c‡`i cv_©K¨ 7| ZvB cieZx© gvb n‡e F+7=16 (Dt)
(41) 4, 8, C AbyµgwUi c‡ii gvb KZ? (All Boards 2018)
(K) D (L) F (M) 10 (N) 16
mgvavbt 4, 8, C(12) avivwUi cÖwZwU c‡`i cv_©K¨ 4| ZvB cieZx© gvb n‡e C+4=10 (Dt)
(42) BDwb‡Kv‡W †gvU KZ¸‡jv wfbœ Aÿi‡K †KvWf~³ Kiv hvq? (All Boards 2018)
(K) 8 (L) 16 (M) 256 (N) 65536
16
mgvavbt BDwb‡KvW n‡jv 16 we‡Ui| myZivs †gvU wfbœ Aÿi ivLv hv‡e 2 = 65536wU| (Dt)
(43) wPý weU KqwU? (M.B. 2018)
(K) 8 (L) 4 (M) 2 (N) 1
wUcm&t evBbvwi msL¨vq wPý weU GKwU _v‡K| Z‡e Zv 0 A_ev 1 n‡Z cv‡i| hw` wPý weU 0 nq
Z‡e msL¨vwU abvZœK Ges wPý weU 1 n‡j msL¨vwU FYvZœK †evSv‡e|
(44) (110110)2 Gi mgKÿ gvb- (All Boards 2018, Cu.B. 2023)
i. (66)8 ii. (54)10 iii. (36)16 wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
mgvavbt (110110)2 = (66)8 = (54)10 = (36)16 | myZivs DËi n‡e i, ii I iii
(45) 678 msL¨vwU n‡jv - (M.B. 2018)
i. A±vj ii. †Wwm‡gj iii. †n·v‡Wwm‡gj| wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t 6, 7, 8 A¼¸‡jv †Wwm‡gj I †n·v‡Wwm‡g‡j i‡q‡Q; wKš‘ 8 A¼wU A±v‡j †bB|
(46) †KvbwU 8 we‡Ui †KvW? (J.B. 2019)
i. ASCII Code ii. EBCDIC Code iii. BCD Code | wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t BCD Pvi we‡Ui †KvW; ASCII I EBCDIC AvU we‡Ui †KvW |
(47) ‘Q’ wbev©Pbx cixÿvq ICT wel‡q (100)8 b¤^i †c‡q‡Q| DÏxc‡K ewY©Z msL¨vwUi †n·v‡Wwm‡gj msL¨v
n‡jv- (B.B. 2019)
(K) 40 (L) 10 (M) 8 (N) 4
mgvavbt MODEBASE-NOCT100 = HEX40 (Dt)
(48) DÏxc‡K ewY©Z msL¨vwUi Av‡Mi msL¨v KZ? (B.B. 2019)
(K) (55)8 (L) (64)8 (M) (66)8 (N) (77)8
mgvavbt MODEBASE-NOCT100 – 1 = (77)8 (Dt)
(49) 1011 msL¨vq KqwU weU Av‡Q? (M.B. 2019)
(K) 2 (L) 3 (M) 4 (N) 10
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 (50) (A)16 + (10)2 + (7)8 Gi gvb n‡Z cv‡i- (Ct.B. 2019)
i. (13)16 ii. (23)8 iii. (10011)2 wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t (A)16+(10)2+(7)8=(10)10+(2)10+(7)10=(19)10=(13)16=(23)8=(10011)2
(51) wb‡Pi †KvbwU 16 we‡Ui †KvW? (R.B. 16, 19; S.B. 2016; M.B. 2018)
(K) ASCII (L) BCD (M) EBCDIC (N) UNICODE
wUcm&t BCD Pvi we‡Ui, EBCDIC AvU we‡Ui, ASCII AvU we‡Ui, UNICODE †lvj we‡Ui †KvW|
(52) EFF Gi c‡ii msL¨vwU KZ? (S.B. 2019)
(K) 100 (L) 200 (M) F00 (N) FF0
mgvavbt MODEBASE-NHEXEFF+1 = F00 (Dt)
(53) (11011.110111)2 Gi mgZzj¨ †n·v‡Wwm‡gj msL¨v KZ? (S.B. 2019)
(K) 1B.37 (L) 1B.DC (M) D8.DC (N) D8.37
mgvavbt (11011.110111)2 = (0001 1011.1101 1100)2 = (1 B.D C)2 = (1B.DC)2 (Dt)
(54) (A + B + C)16 Gi mgZzj¨ gvb †Kvb&wU? (C.B. 2019)
(K) (33)8 (L) (100001)2 (M) (ABC)16 (N) (CBA)16
mgvavbt MODEBASE-NHEXA+B+C = BIN(100001)2 (Dt)
(55) (10)16 Gi c~‡e©i gvb †Kvb&wU? (C.B. 2019)
(K) 1 (L) A (M) E (N) F
mgvavbt MODEBASE-NHEX10 – 1  = (F)16 (Dt)
(56)(1110.11)2 Gi mgKÿ †n·v‡Wwm‡gj msL¨v †Kvb&wU? (D.B. 2019)
(K) E.A (L) E.C (M) C.E (N) E.3
mgvavbt (1110.11)2 = (1110.1100)2 = (E.C)2 (Dt)
(57) (17)8 Gi c‡ii msL¨v †Kvb&wU? (D.B. 2019)
(K) 14 (L) 15 (M) 16 (N) 20
mgvavbt MODEBASE-NOCT17+1 = (20)8 (Dt)
(58)(29)10 msL¨vwUi evBbvwi gvb KZ? (B.B. 2019)
(K) 1110 (L) 11011 (M) 10111 (N) 11101
mgvavbt MODEBASE-NDEC29 = BIN(11101)2 (Dt)
(59) K¬v‡m wkÿK (1011.11)2 I (1101.10)2 Gi †hvMdj wbY©q Ki‡Z ej‡jb| GKRb wkÿv_x©
(11011.11)2 wjLj| †m KZ †ewk wjLj? (Ct.B. 2019)
(K) 10.10 (L) 11.10 (M) 11.11 (N) 101.10
mgvavbt [11011.11 – (1011.11+1101.10)] = [11011.11 – 11001.01] = 10.10 (Dt)
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(60) KzwowfwËK msL¨v c×wZi cÖPjb †Kvb& mf¨Zvq ïiæ nq? (B.B. 2023)
(K) gvqvb (L) fviZxq (M) †ivgvb (N) e¨wewjqb
wUcm&t fviZxq I †ivgvb msL¨vi wfwË `k, gvqvb msL¨vi wfwË Kzwo, e¨wewjqb msL¨vi wfwË lvU|
(61) bb-cwRkbvj msL¨v †Kvb&wU? (R.B. 2023)
(K) 5 (L) 1011 (M) A (N) V
wUcm&t †Wwm‡gj (5), evBbvwi (1011), †n·v‡Wwm‡gj (A), A±vj n‡jv cwRkbvj msL¨v Avi †ivgvb
msL¨v (I, II, III, IV, V,…) n‡jv bb-cwRkbvj msL¨v|
(62) †Kv‡bv msL¨v c×wZ‡Z me©‡gvU hZ¸‡jv AsK e¨envi Kiv nq Zv‡K Kx e‡j? (J.B. 2023)
(K) †KvW (L) †eR (M) weU (N) mvBb weU
wUcm&t †eR (Base) n‡jv †Kv‡bv msL¨v c×wZi AsKmg~‡ni mgwó|
(63) (5A)16 Gi c‡ii msL¨vwU KZ? (D.B. 2023)
(K) (6A)16 (L) (5B)16 (M) (90)16 (N) (90)16
mgvavbt MODEBASE-NHEX(5A)16 + 1 = (5B)16 (Dt)
(64) 8 wfwËK msL¨v n‡jv- (Cu.B. 2023)
i. 0 ii. 7 iii. 8 wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t 8 wfwËK msL¨v n‡jv 0, 1, 2, 3, 4, 5, 6, 7|
(65) (AB)16 Gi mgZzj¨- (My.B. 2023)
i. (10101011)2 ii. (253)8 iii. (73)10 wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
mgvavbt MODEBASE-NHEX(AB)16 =  BIN(10101011)2 (Dt)
MODEBASE-NHEX(AB)16 =  OCT(253)8 (Dt)
(66) GKRb dj we‡µZv (5A)16 UvKvi Av‡cj I (50)8 UvKvi Kgjv weµq K‡i me©‡gvU (20)8 UvKv jvf
K‡i| `kwgK c×wZ‡Z we‡µZvi jv‡fi cwigvY KZ? (Cu.B. 2023)
(K) 10 (L) 16 (M) 20 (N) 22
mgvavbt MODEBASE-NOCT(20)8 =  DEC(16)10 (Dt)
(67) (66) bs cÖ‡kœ we‡µZvi †gvU weµq g~j¨ A±vj c×wZ‡Z KZ? (Cu.B. 2023)
(K) 28 (L) 110 (M) 130 (N) 202
mgvavbt MODEBASE-NHEX(5A)16 =  OCT(132)8
MODEBASE-NOCT(132)8+(50)8 = (202)8 (Dt)
(68) (1010.1101)2 + (101.101)2 = ? (Dj.B. 2023)
(K) (10000.0111)2 (L) (11011.0111)2 (M) (11010.0101)2 (N) (10001.0110)2
mgvavbt MODEBASE-NBIN(1010.1101)2+(101.101)2 = (10000.0111)2
(69) (1000.11100)2 - (101.01001)2 = ? (My.B. 2023)
(K) (0011.10011)2 (L) (1010.10011)2 (M) (1011.10011)2 (N) (1011.11011)2
mgvavbt MODEBASE-NBIN(1000.11100)2 - (101.01001)2 = (0011.10011)2
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(70) 2 Gi cwic~iK c×wZ‡Z †Kvb&wU e¨envi Kiv nq? (Cu.B. 2023)
(K) †hvM K‡i (L) we‡qvM K‡i (M) fvM K‡i (N) ¸Y K‡i
wUcm&t 2 Gi cwic~iK c×wZ‡Z †hv‡Mi gva¨‡gB we‡qvM Kiv nq|
(71) (25)10 Gi 2-Gi cwic~iK gvb †Kvb&wU? (R.B. 2023)
(K) 00011001 (L) 11100110 (M) 11100111 (N) 11000110
mgvavbt 25 Gi AvU weU evBbvwi gvb = 00011001
 1 Gi cwic~iK = 11100110
+1
 2 Gi cwic~iK = 11100111 (Dt)
(72) `kwgK msL¨v 13-Gi 2’s Complement KZ? (R.B. 2023)
(K) 00001100 (L) 11110101 (M) 11110011 (N) 11110100
mgvavbt 13 Gi AvU weU evBbvwi gvb = 00001101
 1 Gi cwic~iK = 11110010
+1
 2 Gi cwic~iK = 11110011 (Dt)
(73) ASCII †Kv‡W hvwš¿K wbqš¿‡Yi Rb¨ KZwU †KvW e¨eüZ nq? (Dj.B. 2023)
(K) 8 (L) 16 (M) 32 (N) 64
wUcm&t ASCII †Kv‡W †gvU 32wU control characters i‡q‡Q|
(74) †Kvb& kvm‡Kiv k~b¨‡K kqZv‡bi iƒc we‡ePbv Ki‡Zv? (My.B. 2024)
(K) gymwjg (L) wMÖK (M) wLª÷xq (N) wgkixq
wUcm&t ZvB wLª÷xq †ivgvbiv k~b¨‡K Zv‡`i msL¨vgvjv‡ZB iv‡Lwb|
(75) 10 wfwËK msL¨v c×wZ n‡jv- (R.B. 2024)
i. fviZxq msL¨v c×wZ ii. gvqvb msL¨v c×wZ iii. Pxbv msL¨v c×wZ
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t fviZxq, Pxbv I †ivgvb msL¨vi wfwË `k, gvqvb msL¨vi wfwË Kzwo, e¨wewjqb msL¨vi wfwË
lvU|
(76) (10111)2 Gi mgZzj¨ `kwgK gvb KZ? (S.B. 2024)
(K) 22 (L) 23 (M) 31 (N) 43
mgvavbt MODEBASE-NBIN(10111)2 =  DEC(23)10 (Dt)
(77) (11001.0100)2 Gi mgZzj¨ A±vj msL¨v KZ? (D.B. 2024)
(K) (25.25)8 (L) (52.52)8 (M) (31.20)8 (N) (62.20)8
mgvavbt MODEBASE-NBIN(10111)2 =  DEC(23)10 (Dt)
(78) (x)5 n‡j x = 14 Gi cieZx© gvb †Kvb&wU? (B.B. 2024)
(K) 15 (L) 18 (M) 20 (N) 22
1 0
mgvavbt (x)5 + 1 = (14)5 + 1 = (15 ) + (45 ) + 1 = (10)10 = (20)5 (Dt)

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(79) 5, D, 15,… avivwUi cieZx© gvb †Kvb&wU? (J.B. 2024)
(K) 20 (L) 29 (M) 1C (N) 1D
mgvavbt 5, D, 15 avivwUi cÖwZwU c‡`i cv_©K¨ 8| ZvB cieZx© gvb n‡e 15+8=1D (Dt)
(80) (FF)16 Gi c~‡e©i msL¨v †Kvb&wU? (D.B. 2024)
(K) EE (L) EF (M) FE (N) FO
mgvavbt MODEBASE-NHEX(FF)16 – 1 = (FE)16 (Dt)
(81) (101110)2 Gi mgKÿ gvb- (My.B. 2024)
i. (56)8 ii. (46)10 iii. (2F)16 wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
mgvavbt MODEBASE-NBIN(101110)2 =  OCT(56)8 (Dt)
MODEBASE-NBIN(101110)2 =  DEC(46)10 (Dt)
(82) (01011111)2 Gi mgKÿ gvb- (Ct.B. 2024)
i. (5F)16 ii. (137)8 iii. (95)10 wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
mgvavbt MODEBASE-NBIN(01011111)2 =  HEX(5F)16 (Dt)
MODEBASE-NBIN(01011111)2 =  OCT(137)8 (Dt)
MODEBASE-NBIN(01011111)2 =  DEC(95)10 (Dt)
(83) 321 msL¨vwU n‡Z cv‡i- (J.B. 2024)
i. A±vj ii. †Wwmgvj iii. †n·v‡Wwmgvj wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
wUcm&t 3, 2, 1 AsK¸‡jv A±vj, †Wwmgvj, †n·v‡Wwmgvj msL¨vq i‡q‡Q| wKš‘ evBbvwi‡Z 3, 2
†bB|
(84) (E)16 + (11)2 + (7)8 Gi gvb n‡Z cv‡i- (Cu.B. 2024)
i. (18)16 ii. (11001)2 iii. (30)8 wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
mgvavbt MODEBASE-NBIN(11)2 =  HEX(3)16
MODEBASE-NHEX(E+3+7)16 = (18)16 (Dt)
MODEBASE-NHEX(18)16 =  OCT(30)8 (Dt)
(85) ivwR‡ei †ivj (77)8 Gi mgZzj¨ gvb - (B.B. 2024)
i. (63)10 ii. (111111)2 iii. (3F)16 wb‡Pi †Kvb&wU mwVK?
(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii
mgvavbt MODEBASE-NOCT(77)8 =  DEC(63)10 (Dt)
MODEBASE-NOCT(77)8 =  BIN(111111)2 (Dt)
MODEBASE-NOCT(77)8 =  HEX(3F)16 (Dt)
(86) evBbvwi msL¨v 1111010 Ges 1010111 Gi †hvMdj KZ? (S.B. 2024)
(K) 10100001 (L) 10101001 (M) 11010001 (N) 11010101
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 mgvavbt MODEBASE-NBIN(1111010)2 + (1010111)2 = (11010001)2 (Dt)
(87) (1101.10010)2 – (111.11011)2 = ? (R.B. 2024)
(K) (100.10111)2 (L) (101.00111)2 (M) (100.10101)2 (N) (101.10111)2
mgvavbt MODEBASE-NBIN(1101.10010)2 - (111.11011)2 = (101.10111)2 (Dt)
(88) K¬v‡m ICT wkÿK (1011.11)2 I (1101.10)2 Gi †hvMdj wbY©q Ki‡Z ej‡jb| Avwid (11011.11)2
wjLj| †m KZ †ewk wjLj? (S.B. 2024)
(K) 101.10 (L) 11.11 (M) 11.10 (N) 10.10
mgvavbt MODEBASE-NBIN(1011.11)2 + (1101.10)2 = (11001.01)2
MODEBASE-NBIN(11011.11)2 - (11001.01)2 = (10.10)2 (Dt)
(89) (31)10 msL¨vwUi 2’s Complement KZ? (Ct.B. 2024)
(K) 11000111 (L) 11100000 (M) 11000010 (N) 11100001
mgvavbt 31 Gi AvU weU evBbvwi gvb = 00011111
 1 Gi cwic~iK = 11100000
+1
 2 Gi cwic~iK = 11100001 (Dt)
(90) 4 weUwewkó †KvW †Kvb&wU? (R.B. 2024)
(K) Octal code (L) BCD code (M) ASCII code (N) Unicode
wUcm&t BCD code me©`v 4 weUwewkó nq|
(91) B‡gvwR †Kvb& †KvWhy³? (B.B. 2024)
(K) EBCDIC (L) ASCII-7 (M) ASCII-8 (N) Unicode
wUcm&t 15.1 fvm©‡bi B‡gvwR (Emoji) 3782wU Unicode hy³|
(92) UTF-8 wb‡¤œi †Kvb& †KvW? (J.B. 2024)
(K) BCD (L) EBCDIC (M) ASCII-8 (N) Unicode
wUcm&t UTF-8 gv‡b Unicode Transformation Format-8| eZ©gv‡b mviv we‡k^ B›Uvi‡bU
cÖhyw³‡Z UTF-8 me©vwaK e¨eüZ Unicode Encoding System|

ICT Education by evsjv‡`k MwYZ dvD‡Ûkb, 6/18 mwjgyjøvn& †ivW, †gvnv¤§`cyi, XvKv 1207| †dvb: 01815443199
Prepared by Muhammad Shamim, Associate Professor, CA Education Faculty,
(Cell: 01815443199) Howladar Yunus & Co., Gulshan-1, Dhaka- 1212.

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