Question

Let x=32^n. The index n is given a positive integral value at random. The probability that the value of x will have 3 in the units place is

Answer 1

its probability is 0 as 32 is an even no. and multipliying it many times by itself will also giv e an even no. which means it will always have multiple of 2 at its unit digit but 3 is not the multiple of 2 so it will never come
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