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Which of the following integers is the square of an integer?

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Joined: 15 Jun 2018
Posts: 13
Location: India
Concentration: Finance, Strategy
GPA: 3.45
WE: Asset Management (Commercial Banking)
Which of the following integers is the square of an integer? [#permalink]

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New post 07 Jul 2018, 03:47
3
00:00
A
B
C
D
E

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(N/A)

Question Stats:

80% (01:01) correct 20% (00:00) wrong based on 5 sessions

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Which of the following integers is the square of an integer?

(A) 73,410,624
(B) 63,398,748
(C) 54,113,892
(D) 42,785,337
(E) 31,298,793
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Joined: 14 Feb 2018
Posts: 379
Re: Which of the following integers is the square of an integer? [#permalink]

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New post 07 Jul 2018, 05:52
Observing only the last digit can make it clear.

The square of an integer must contain last digit as 1, 4, 9, 6, 5.

B, C, D and E contain the last digit as 8, 2, 7 and 3 respectively, which cannot result from squaring an integer.

Only option A has the last digit as 4. Thus, A is the answer.

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Re: Which of the following integers is the square of an integer? [#permalink]

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New post 07 Jul 2018, 07:43
Re: Which of the following integers is the square of an integer?   [#permalink] 07 Jul 2018, 07:43
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Which of the following integers is the square of an integer?

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