The correct option is A 5
Total number of possible outcomes are 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.
For the number to be even the digit at unit's place must be an even number or '0'.
Thus, the favourable outcomes are 0, 2, 4, 6 and 8.
Hence, the number of favourable outcomes is 5.