**Quote:**

What is the remainder when the positive integer n is divided by the positive integer k,

where k > 1?

(1) n = (k+1)^3

(2) k = 5

Answer is A

Stat 1

plug in numbers

n = (k+1)^3

Let K be 2

n=(2+1)^3

n=3^3 =9

n/k=9/2 ---the remainder is 1

n = (k+1)^3

Let K be 3

n=(3+1)^3

n=4^3 =64

n/k=64/3 ---the remainder is 1

n = (k+1)^3

Let K be 4

n=(4+1)^3

n=5^3 =125

n/k=125/4 ---the remainder is 1

A is suff

stat 2.

k = 5

we don't know about n..hence not suff.

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