Discussion

Explanation:

For a number to be divisible by 3, the sum of the digits should be divisible by 3.

Here sum of the digits = 1 + 2 + 2 + 5 + x + 2 + 4 = 16 + x.
16 + x is divisible by 3 when x = 2 or 5 or 8.

The number can be 1225224 or 1225524 or 1225824

For a number to be divisible by 8, last 3 digits should be divisible by 8.
Both 224 and 824 are divisible by 8, hence 1225224 and 1225824 are also divisible by 8.

∴ 1225224 and 1225824 are divisible by both 2 and 8.

Hence, option (d).

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