You should stay calm and apply techniques useful for your goal.

If you use the answer choices to reach the solution the question is easy.

The stem says an even positive number so C and E are suddenly out.

Now n must match the last digit of \(n^2\)

12 = 144 ---- 2 and four. does not fit

14 = 196 ----- 4 and 6. does not match

16 = 4.096 ----- 6 and 6. Match. D is the answer.

You could recognize that \(6^2\) is always a number that ends in 6.

Hope this helps

Regards

_________________

Get the 2 FREE GREPrepclub Tests