# Computer Aptitude Questions Set – 2

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. If ∆ represents ‘0’ and ○ represents ‘1’. What will be the one’s complement of  ∆○∆∆○○?
1.101100
2.010011
3.100110
4.001100
5.None of these
Explanation :
∆○∆∆○○ => 010011
010011 1’s complement is 101100

2. represents which of the following logic gate ?
1.AND
2.OR
3.NOT
4.NOR
5.None of these
Explanation :
AND Gate is a Boolean operator which gives the value one if and only if all the operands are one, and otherwise has a value of zero.

3. Which Boolean operator will operate with only one variable ?
1.NOT
2.NAND
3.NOR
4.Exclusive NOR
5.None of these
Explanation :
NOT is a Boolean operator with only one variable that has the value one when the variable is zero and vice versa.

4. represent ________________
1.AND Gate
2.OR Gate
3.NOT Gate
4.NOR Gate
5.None of these
Explanation :
A Logic OR Gate or Inclusive-OR gate is a type of digital logic gate that has an output which is normally at logic level “0” and only goes “HIGH” to a logic level “1”

5. Triangle represents ∆ (0) and circle represents o (1). If triangle appears in unit’s place then its value is 1. If it appears in 10’s place its value is doubled to 2 like that it continues. Using the given terminology answer the following questions. For example:
How will you represent ‘102’ in this code language?
1.oo∆∆ooo
2.oo∆∆o∆∆
3.∆o∆oo∆o
4.oo∆∆oo∆
5.None of these
Explanation :

 128 64 32 16 8 4 2 1 1 1 0 0 1 1 0

6. The code ∆∆o∆o∆∆ represents
1.26
2.12
3.20
4.16
5.None of these
Explanation :
∆∆o∆o∆∆ => 0010100
16+0+4+0+0=20

1.8
2.2
3.10
4.16
5.None of these
Explanation :
In mathematics and computing, hexadecimal (also base 16, or hex) is a positional numeral system with a radix, or base, of 16. It uses sixteen distinct symbols, most often the symbols 0–9 to represent values zero to nine, and A, B, C, D, E, F (or alternatively a, b, c, d, e, f) to represent values ten to fifteen.

8. Which among the following is an appropriate Octal conversion for  10101001 ?
1.125
2.152
3.251
4.521
5.None of these
Explanation :
010 = 2
101  = 5
001 =1
10101001 = 251

9. If P and Q are the inputs, then output X = P+Q is the output of
1.NOR
2.NAND
3.AND
4.OR
5.None of these
Explanation :
A =1, B= 0
Then y =1+0 = 1

10. If A and B are the inputs, then output Y = A.B is the output of which logical operator ?
1.NOT
2.NAND
3.NOR
4.AND
5.None of these