self Maths Puzzle

what is 6/2(1+2) ???

justify the answer

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self Other Question

three no are selected at random one after another without replacement from n no.what is the probability that the no drawn will be smallest and the 2nd is the large? IN how many ways 3 men and their wifes be made stand in a line such that none of 3 men stand in a position that is ahead of his wife?