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If n integers taken art random are multi...

If `n` integers taken art random are multiplied together , then the probability that eh last digit of the product is 1, 3, 7, or 9 is `2^n//5^n` b. `4^n-2^n//5^n` c. `4^n//5^n` d. none of these

A

`(2^(n))/(5^(n))`

B

`(4^(n)-2^(n))/(5^(n))`

C

`(4^(n))/(5^(n))`

D

none of these

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