Question : If any four numbers are selected and they are multiplied, then the probability that the last digit will be 1, 3, 5 or 7 is

(A) 4/625

(B) 18/625

(C) 16/625

(D) none of these

Answer : option (C)

Solution :

with
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Question : If any four numbers are selected and they are multiplied, then the probability that the last digit will be 1, 3, 5 or 7 is

(A) 4/625

(B) 18/625

(C) 16/625

(D) none of these

Answer : option (C)

Solution :