# Computer Aptitude Questions Set – 1

Hello Aspirants.

Welcome to Online Computer Aptitude Quiz Section based on New Pattern in AffairsCloud.com. Here we are creating quiz based on Number System conversion for SBI/IBPS Exams.

1. Convert the given Decimal number into Binary form – 175
1.100011112
2.111110102
3.111010112
4.101011112
5.None of these
Explanation :
Divide the number by Short division with 2 then note down the remainder one by one. Then write it down from LSB(Least significant bit ) to MSB(Most significant bit )
175/2 = Remainder 1
87/2 = Remainder 1
43/2 = Remainder 1
21/2 = Remainder 1
10/2 = Remainder 0
5/2 = Remainder 1
2/2 = Remainder 0
1/2= Remainder 1
17510 = 101011112

2. Convert the given Binary number into Decimal form – 1001112
1.39
2.71
3.27
4.16
5.None of these
Explanation :
1001112
25+ 0+ 0+ 22+ 21+ 20
32+0+0+4+2+1 = 39

3. Convert the given Decimal number into Octal form  – 125
1.1408
2.1758
3.1258
4.1208
5.None of these
Explanation :
125/8 = Remainder = 5
15/8 = Remainder = 7
1

4. Convert the given Base 10 into Base 16 – 210
1.2D16
2.21316
3.D216
4.13216
5.None of these
Explanation :
210/16 = Remainder 2
13 =>D(A=10, B=11, C=12, D=13)

5. Convert the given Binary number into Octal number 1100110
1.1608
2.1648
3.1408
4.1468
5.None of these
Explanation :
001 /100 /110
1/4/6
1100110 = 1468

6. Convert the given Binary number into Hexadecimal Number 1100110
1.4416
2.8816
3.2216
4.6616
5.None of these
Explanation :
0110/0110
6/6 = 66

7. What will be the one’s complement of decimal number 33 ?
1.110011
2.100001
3.011110
4.001101
5.None of these
Explanation :
100001=32+0+0+0+0+1 =33
100001 => 011110

8. What will be the one’s complement of 0100102 ?
1.101111
2.101101
3.100100
4.110101
5.None of these
Explanation :
Just replace 0 by 1 & 1 by 0
010010 = 101101

9. Find the 2’s complement of 0100102?
1.100100
2.101101
3.101100
4.101110
5.None of these
Explanation :
010010 = 101101
(1+0 or 0+1 =1 and 1+1 =10)
101101
1 (+)
—————-
101110
—————-

10. Convert the given Hexadecimal into Decimal number(Base 10) – CB2
1.2510
2.121110
3.325010
4.125010
5.None of these