SAT Math - Question of the day - 10th Nov 2016

SAT Math - Question of the day - 10th Nov 2016

A and B are even integers. Which of the following cannot be even? Option:

a.   AB

b.  3AB

c.   AB-1

d.  7A2

Solutions:

Product of even numbers is always even.

After applying the above rule, it can be found that choices A, B, and D are incorrect because they are even integers.

Hence, choice C is correct.

This problem can also be solved by using method of subsitution .

Try to solve this question on your own! Do post your comments and solutions in the comment section below.

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