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# If n is a positive integer, is n>3? 1) n^2>9 2) √n>1.5

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VP
Joined: 23 Feb 2015
Posts: 1263
If n is a positive integer, is n>3? 1) n^2>9 2) √n>1.5  [#permalink]

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27 Mar 2019, 02:31
00:00

Difficulty:

45% (medium)

Question Stats:

50% (01:01) correct 50% (00:42) wrong based on 18 sessions

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If n is a positive integer, is $$n>3?$$
1) $$n^2>9$$
2) $$√n>1.5$$

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Intern
Joined: 13 Feb 2019
Posts: 2
Re: If n is a positive integer, is n>3? 1) n^2>9 2) √n>1.5  [#permalink]

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27 Mar 2019, 03:01
N is a positive integer, so n > 3 let's take 1st condition:

1) n^2 > 9, we obtain value of n, by sqaure root both side and it gives us condition n > 3

2) ✓n > 1.5, we try to find value of n, square both side and n>2.5 which do not gurantees n>3.

Correct answer is n>3 in 1st condition

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Re: If n is a positive integer, is n>3? 1) n^2>9 2) √n>1.5   [#permalink] 27 Mar 2019, 03:01
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