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Operators and Assignments - Programming

Q1:

Which two statements are equivalent?
  1. 3/2
  2. 3<2
  3. 3*4
  4. 3<<2

A 1 and 2

B 2 and 3

C 3 and 4

D 1 and 4

ANS:C - 3 and 4

(1) is wrong. 3/2 = 1 (integer arithmetic). (2) is wrong. 3 < 2 = false. (3) is correct. 3 * 4 = 12. (4) is correct. 3 <<2= 12. In binary 3 is 11, now shift the bits two places to the left and we get 1100 which is 12 in binary (3*2*2).