Number Systems MCQs, Set 2 of 2
Q1 / 36
Q1. What is the decimal number 1392 in hexadecimal?
- A.571
- B.570(correct answer)
- C.56E
- D.580
Divide 1392 repeatedly by 16 and read the remainders from last to first: 1392 = 570 in base 16.
Q2. What is the hexadecimal number BFF in decimal?
- A.3069
- B.3073
- C.3063
- D.3071(correct answer)
Multiply each digit by its place value (powers of 16) and add: BFF in base 16 = 3071.
Q3. What is the decimal number 111 in octal?
- A.153
- B.157(correct answer)
- C.161
- D.160
Divide 111 repeatedly by 8 and read the remainders from last to first: 111 = 157 in base 8.
Q4. What is the octal number 233 in decimal?
- A.153
- B.157
- C.155(correct answer)
- D.163
Multiply each digit by its place value (powers of 8) and add: 233 in base 8 = 155.
Q5. What is the decimal number 219 in binary?
- A.11011011(correct answer)
- B.11011100
- C.11010011
- D.11011001
Divide 219 repeatedly by 2 and read the remainders from last to first: 219 = 11011011 in base 2.
Q6. What is the binary number 10000010 in decimal?
- A.128
- B.132
- C.130(correct answer)
- D.129
Multiply each digit by its place value (powers of 2) and add: 10000010 in base 2 = 130.
Q7. What is the decimal number 508 in hexadecimal?
- A.1FA
- B.1EC
- C.1FC(correct answer)
- D.1FE
Divide 508 repeatedly by 16 and read the remainders from last to first: 508 = 1FC in base 16.
Q8. What is the hexadecimal number F75 in decimal?
- A.3953
- B.3959
- C.3965
- D.3957(correct answer)
Multiply each digit by its place value (powers of 16) and add: F75 in base 16 = 3957.
Q9. What is the decimal number 87 in octal?
- A.130
- B.127(correct answer)
- C.126
- D.131
Divide 87 repeatedly by 8 and read the remainders from last to first: 87 = 127 in base 8.
Q10. What is the octal number 376 in decimal?
- A.254(correct answer)
- B.252
- C.256
- D.253
Multiply each digit by its place value (powers of 8) and add: 376 in base 8 = 254.
Q11. What is the decimal number 111 in binary?
- A.1100111
- B.1101111(correct answer)
- C.1110000
- D.1110001
Divide 111 repeatedly by 2 and read the remainders from last to first: 111 = 1101111 in base 2.
Q12. What is the binary number 10000011 in decimal?
- A.139
- B.130
- C.131(correct answer)
- D.132
Multiply each digit by its place value (powers of 2) and add: 10000011 in base 2 = 131.
Q13. What is the decimal number 3730 in hexadecimal?
- A.E90
- B.E82
- C.E92(correct answer)
- D.EA2
Divide 3730 repeatedly by 16 and read the remainders from last to first: 3730 = E92 in base 16.
Q14. What is the hexadecimal number 9C in decimal?
- A.172
- B.157
- C.148
- D.156(correct answer)
Multiply each digit by its place value (powers of 16) and add: 9C in base 16 = 156.
Q15. What is the decimal number 303 in octal?
- A.457(correct answer)
- B.461
- C.456
- D.467
Divide 303 repeatedly by 8 and read the remainders from last to first: 303 = 457 in base 8.
Q16. What is the octal number 246 in decimal?
- A.164
- B.165
- C.158
- D.166(correct answer)
Multiply each digit by its place value (powers of 8) and add: 246 in base 8 = 166.
Q17. What is the decimal number 14 in binary?
- A.110
- B.1110(correct answer)
- C.1100
- D.10000
Divide 14 repeatedly by 2 and read the remainders from last to first: 14 = 1110 in base 2.
Q18. What is the binary number 1011010 in decimal?
- A.90(correct answer)
- B.91
- C.82
- D.92
Multiply each digit by its place value (powers of 2) and add: 1011010 in base 2 = 90.
Q19. What is the decimal number 4066 in hexadecimal?
- A.FE0
- B.FE4
- C.FE2(correct answer)
- D.FE3
Divide 4066 repeatedly by 16 and read the remainders from last to first: 4066 = FE2 in base 16.
Q20. What is the hexadecimal number E6A in decimal?
- A.3706
- B.3689
- C.3690(correct answer)
- D.3688
Multiply each digit by its place value (powers of 16) and add: E6A in base 16 = 3690.
Q21. What is the decimal number 420 in octal?
- A.634
- B.644(correct answer)
- C.654
- D.645
Divide 420 repeatedly by 8 and read the remainders from last to first: 420 = 644 in base 8.
Q22. What is the octal number 513 in decimal?
- A.335
- B.331(correct answer)
- C.329
- D.323
Multiply each digit by its place value (powers of 8) and add: 513 in base 8 = 331.
Q23. What is the decimal number 58 in binary?
- A.111000
- B.111001
- C.111010(correct answer)
- D.111011
Divide 58 repeatedly by 2 and read the remainders from last to first: 58 = 111010 in base 2.
Q24. What is the binary number 10100001 in decimal?
- A.161(correct answer)
- B.169
- C.162
- D.160
Multiply each digit by its place value (powers of 2) and add: 10100001 in base 2 = 161.
Q25. What is the decimal number 3546 in hexadecimal?
- A.DDA(correct answer)
- B.DDB
- C.DD9
- D.DDC
Divide 3546 repeatedly by 16 and read the remainders from last to first: 3546 = DDA in base 16.
Q26. What is the hexadecimal number F97 in decimal?
- A.3992
- B.3990
- C.3991(correct answer)
- D.3975
Multiply each digit by its place value (powers of 16) and add: F97 in base 16 = 3991.
Q27. What is the decimal number 384 in octal?
- A.570
- B.610
- C.600(correct answer)
- D.601
Divide 384 repeatedly by 8 and read the remainders from last to first: 384 = 600 in base 8.
Q28. What is the octal number 643 in decimal?
- A.419(correct answer)
- B.417
- C.421
- D.427
Multiply each digit by its place value (powers of 8) and add: 643 in base 8 = 419.
Q29. What is the decimal number 160 in binary?
- A.10100001
- B.10011110
- C.10100000(correct answer)
- D.10101000
Divide 160 repeatedly by 2 and read the remainders from last to first: 160 = 10100000 in base 2.
Q30. What is the binary number 10011111 in decimal?
- A.160
- B.157
- C.159(correct answer)
- D.155
Multiply each digit by its place value (powers of 2) and add: 10011111 in base 2 = 159.
Q31. What is the decimal number 365 in hexadecimal?
- A.16D(correct answer)
- B.165
- C.16E
- D.169
Divide 365 repeatedly by 16 and read the remainders from last to first: 365 = 16D in base 16.
Q32. What is the hexadecimal number 12F in decimal?
- A.287
- B.304
- C.303(correct answer)
- D.302
Multiply each digit by its place value (powers of 16) and add: 12F in base 16 = 303.
Q33. What is the decimal number 113 in octal?
- A.162
- B.161(correct answer)
- C.160
- D.171
Divide 113 repeatedly by 8 and read the remainders from last to first: 113 = 161 in base 8.
Q34. What is the octal number 446 in decimal?
- A.286
- B.292
- C.302
- D.294(correct answer)
Multiply each digit by its place value (powers of 8) and add: 446 in base 8 = 294.
Q35. What is the decimal number 173 in binary?
- A.10101011
- B.10101101(correct answer)
- C.10101111
- D.10100101
Divide 173 repeatedly by 2 and read the remainders from last to first: 173 = 10101101 in base 2.
Q36. What is the binary number 11111011 in decimal?
- A.249
- B.250
- C.255
- D.251(correct answer)
Multiply each digit by its place value (powers of 2) and add: 11111011 in base 2 = 251.