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# If X and Y are positive integers, is X = Y? (1) X = 13 * 13! (2) Y

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Retired Moderator
Joined: 22 Aug 2013
Posts: 1430
Location: India
If X and Y are positive integers, is X = Y? (1) X = 13 * 13! (2) Y  [#permalink]

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04 Apr 2018, 23:32
1
00:00

Difficulty:

15% (low)

Question Stats:

94% (00:43) correct 6% (01:07) wrong based on 40 sessions

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If X and Y are positive integers, is X = Y?

(1) X = 13 * 13!

(2) Y = 14! - 13!
Manager
Joined: 10 Aug 2009
Posts: 62
Re: If X and Y are positive integers, is X = Y? (1) X = 13 * 13! (2) Y  [#permalink]

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04 Apr 2018, 23:48
A and B are definitely not sufficient, simplifying 2) eqn gives same value as 1) , hence C

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Manager
Joined: 17 Jan 2017
Posts: 60
Re: If X and Y are positive integers, is X = Y? (1) X = 13 * 13! (2) Y  [#permalink]

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05 Apr 2018, 10:21
amanvermagmat wrote:
If X and Y are positive integers, is X = Y?

(1) X = 13 * 13!

(2) Y = 14! - 13!

(1) + (2)
X = 13 * 13!
Y = 14! - 13! = 13! (14 - 1) = 13! * 13
==> X = Y
SUFFICIENT

(C)
Re: If X and Y are positive integers, is X = Y? (1) X = 13 * 13! (2) Y   [#permalink] 05 Apr 2018, 10:21
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