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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.
(1) X = 5.
(2) N is divisible by 10.
16 Jul 2018, 12:42
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amanvermagmat
N is the sum of X consecutive positive integers, is N divisible by 5?
(1) X = 5.
(2) N is divisible by 10.
(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.
09 Nov 2020, 10:04
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amanvermagmat
N is the sum of X consecutive positive integers, is N divisible by 5?
(1) X = 5.
(2) N is divisible by 10.
(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.
N = sum of consecutive integers (n, n+1, n+2, n+3, n+4), but why are you taking only the even or odd numbers (n, n+2...
I agree that any series in an A.P with a C.D of 1, 2, or 3 would lead to the same answer. But is there a specific reason you took those nos, considering the question is specifically asking for consecutive positive integers?
