1.

If n positive integers are taken at random and multiplied together, the probability that the last digit of the product is 2,4,6, or 8 is

Answer»

`(5^n -3^n)/(5^n)`
`(4^n - 2^n)/(5^n)`
`(3^n -2^n)/(5^n)`
`(3^n -2^n)/(4^n)`

ANSWER :A


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