Question

{3,2,2,2,0,3,3}

How many 7 digit even numbers can be written ?

Hint:
0 can't come at the leftmost. Count two different cases. First when 0 is at the rightmost position, second when 2 is at the rightmost position. But subtract those in which 0 is at the leftmost

Answer 1

Answer:

sorry but I didn't know the answer