Tuesday, July 5, 2016

1. Which of the following is not a binary number?
 10101010
 20202020
 01010101
 10101101
 11111111
Solution:
Binary number has only two digits i.e. 0 and 1

2. Which among the following is an appropriate binary conversion for the number 013 (which is of base 8)?

 101010
 11011
 1011
 1110
 0001
Solution:
Following are the steps to convert 013 (octal number) to binary

3.The following image represents which logic gate?


 AND
 OR
 NOR
 NAND
 NOT

4. If ∆ represents ‘0’ and ○ represents ‘1’. What will be the one’s complement of - ○∆∆○○∆? 

 011001
 100110
 101010
 000000
 111111
Solution:
○∆∆○○∆ represents 100110. For finding one’s complement we change each 1 to 0 and each 0 to 1. Hence One’s complement of 100110 will be 011001. (Note: this is not the same question as the one asked in SBI Clerk mains.)

5. Which of the following is a Logical Disjunction? 

 OR gate
 AND gate
 NOT gate
 both(a) and (b)
 All of the above
Solution:
When two statements are combined with 'OR,' then it is a disjunction.

6. If Ӣ represents ‘1’ and Ṉ represents ‘0’. A is the input end of NOT logic gate and B is the only output. What will be the output if the input is A=Ӣ? 

 ṈӢ
 Ṉ
 Ӣ
 ӢṈ
 ӢṈ Ӣ
Solution:

7.Which of the following symbol represents input or output in a flow chart?


 a
 b
 c
 d
 e

8. What is the range of Hexadecimal Number system? 

 0-F
 0-1
 0-Z
 A-Z
 0-9

9. If © represents ‘1’ and ∞ represents ‘0’. What will be the one’s complement of -© ∞© ∞∞©©? 

 0110011
 1010011
 0011001
 0101100
 1111111

10. Convert the given Binary number to decimal: 101011 

 45
 30
 41
 42
 43
Solution:

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