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N is the sum of X consecutive positive integers, is N divisible by 5?

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N is the sum of X consecutive positive integers, is N divisible by 5?  [#permalink]

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New post 16 Jul 2018, 10:18
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N is the sum of X consecutive positive integers, is N divisible by 5?

(1) X = 5.

(2) N is divisible by 10.
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Re: N is the sum of X consecutive positive integers, is N divisible by 5?  [#permalink]

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New post 16 Jul 2018, 11:42
amanvermagmat wrote:
N is the sum of X consecutive positive integers, is N divisible by 5?

(1) X = 5.

(2) N is divisible by 10.


Statement 02: If N is divisible by 10 .... Definitely it will be divisible by 5..........SUFFICINT
Statement 01: x=5, say the numbers be n, n+2 , n+4 , n+6 , n+8 (n=1,2......)
hence, N=n + n+2 + n+4 + n+6 + n+8 =5n+20
hence N/5=n+4......... hence N is divisivle by 5........................................SUFFICIENT ...... Ans D.
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Re: N is the sum of X consecutive positive integers, is N divisible by 5? &nbs [#permalink] 16 Jul 2018, 11:42
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N is the sum of X consecutive positive integers, is N divisible by 5?

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