McqMate
Q. |
Which of the following expressions can be used to multiply a given number ‘a’ by 4? |
A. | a<<2 |
B. | a<<4 |
C. | a>>2 |
D. | a>>4 |
Answer» A. a<<2 | |
Explanation: let us consider an example wherein a=2. the binary form of 2 is 0010. when we left shift this value by 2, we get 1000, the value of which is 8. hence if we want to multiply a given number ‘a’ by 4, we can use the expression: a<<2. |
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