The number of three-digit even numbers, formed by the digits 0,1,3,4,6,7 if the repetition of digits is not allowed, is
Question:
The number of three-digit even numbers, formed by the digits $0,1,3,4,6,7$ if the repetition of digits is not allowed, is___________
Solution:
(i) When ' 0 ' is at unit place
Number of numbers $=20$
(ii) When 4 or 6 are at unit place
Number of numbers $=32$
So number of numbers $=52$