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# If x is a positive integer, is x even? (1) The remainder of (x^2-1)/4

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If x is a positive integer, is x even? (1) The remainder of (x^2-1)/4 [#permalink]

For some reason I used Statement B with Statement A

Silly mistake

Originally posted by Shanil92 on 12 Aug 2021, 23:30.
Last edited by Shanil92 on 13 Aug 2021, 00:30, edited 1 time in total.
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Re: If x is a positive integer, is x even? (1) The remainder of (x^2-1)/4 [#permalink]
A)x^2=4n+1
x^2=1,9,25,49..( as x is positive integer)
x=1,3,5,7..
x is odd
Sufficient
B)Not sufficient
1,2,3,4

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Re: If x is a positive integer, is x even? (1) The remainder of (x^2-1)/4 [#permalink]
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