Question

how many 6-digit even number are formed from 1,2,3,4,5,6 and 7 so that the digit should not repeat and the second last digit is even

Answer 1

hey dear
here is your answer ☆

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☞ there are 6 places in total

an even number is to be formed which means last place should be occupied only by even numbers, so 3 numbers can fit in that place.

at second last place even number should be placed so 2 numbers can be there ( as one digit is on last place)

now, rest places can be filled in 5! ways

hence, 5! (2) (3) = 720


hope it helps ✌ ✌