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1.

Which two are equal?

Answer» (2) and (4) are correct. (2) and (4) both evaluate to 32. (2) is shifting bits right then left using the signed bit shifters >> and <<. (4) is shifting bits using the unsigned operator >>>, but since the beginning number is positive the sign is maintained. (1) evaluates to 8, (3) looks like 2 to the 5th power, but ^ is the Exclusive OR operator so (3) evaluates to 7. (5) evaluates to 0 (2 >> 5 is not 2 to the 5th).
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2.

Which two statements are equivalent?

Answer» (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).
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