Question

if n is any natural number, then which of the fôllowing numbers end with 0
a) (3×2)n
b) (5×2)n
c) (6×2)n
d) (4×2)n
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Answer 1

Answer:

I think option d is the correct✅ answer.

Answer 2

81

n

−16

n

⇒a

n

−b

n

is always divisible by (a−b)

(81−16)=65

∴ So factors are both 5 and 2