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# The last digit of the positive even number n equals the last

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Intern
Joined: 30 Oct 2017
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The last digit of the positive even number n equals the last [#permalink]  30 May 2018, 00:51
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Question Stats:

100% (00:54) correct 0% (00:00) wrong based on 4 sessions
The last digit of the positive even number n equals the last digit of $$n^2$$. Which one of the following could be n ?

(A) 12

(B) 14

(C) 15

(D) 16

(E) 17
Retired Moderator
Joined: 07 Jun 2014
Posts: 4803
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
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Re: The last digit of the positive even number n equals the last [#permalink]  01 Jun 2018, 15:18
Expert's post
Look at the even options one by one.

(A) 12 .... $$12^2=144$$

(B) 14 .... $$14^2=196$$

(C) 15 .... ignore it is odd

(D) 16 .... $$16^2=256$$ Correct

(E) 17 .... ignore it is odd
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Re: The last digit of the positive even number n equals the last   [#permalink] 01 Jun 2018, 15:18
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