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# When Y is divided by 2, is the remainder 1?

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Manager
Joined: 15 Mar 2014
Posts: 140
Location: India
Concentration: Technology, General Management
GPA: 3.5
WE: Operations (Telecommunications)
When Y is divided by 2, is the remainder 1? [#permalink]

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16 Mar 2017, 07:13
1
2
00:00

Difficulty:

15% (low)

Question Stats:

77% (00:40) correct 23% (00:47) wrong based on 96 sessions

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When Y is divided by 2, is the remainder 1?

1. $$(-1)^{(Y+2)}$$ = -1
2. Y is prime

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Director
Joined: 05 Mar 2015
Posts: 978
Re: When Y is divided by 2, is the remainder 1? [#permalink]

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16 Mar 2017, 07:54
ashwink wrote:
When Y is divided by 2, is the remainder 1?

1. $$(-1)^{(Y+2)}$$ = -1
2. Y is prime

(1) -1^a= -1 only when a= odd
thus here a= Y+2 = Y+even thus Y is odd
suff

(2) if Y=2 then No(remainder 0)
if Y=3 then Yes (remainder 1)
insuff

Ans A
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Joined: 09 Sep 2013
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Re: When Y is divided by 2, is the remainder 1? [#permalink]

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19 Apr 2018, 05:55
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Re: When Y is divided by 2, is the remainder 1?   [#permalink] 19 Apr 2018, 05:55
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