Here is the tutorial which explains you the divisibility rule for 24. That is the set of rules to be followed to determine if a number is divisible by 24 (without reminders). The rule is illustrated with clear examples for easier understanding.

Check if the number is divisible by 3 and 8. If it is divisible by both the numbers, then the original number is also divisible by 24.

Find if the number 210103512 is divisible by 24.

Applying the divisibility rule for 24,

Add all the digits to check whether the resultant value is divisible by 3
(i.e) 2 + 1 + 0 + 1 + 0 + 3 + 5 + 1 + 2 = 15
**15 is divisible by 3,** therefore **210103512 is also divisible by 3**

Consider the last 3 digits to check whether it is divisible by 8
The last three digit of **210103512** is **512**
512 is divisible by 8 (i.e) **64 x 8 = 512**
Hence the number **210103512 is also divisible by 8**

Since the number **210103512 is divisible by both 3 and 8, it is also divisible by 24**

Let us consider the number 674665413 and find if it is divisible by 24.

Add all the digits to check whether the resultant value is divisible by 3 (i.e) 6 + 7 + 4 + 6 + 6 + 5 + 4 + 1 + 3 = 42 42 is divisible by 3, therefore the original number is also divisible by 3

Consider the last 3 digits to check whether it is divisible by 8
The last three digit of the number is 413. **413 is not divisible by 8**
Hence, the number **674665413 is not divisible by 8**

Since the number **674665413 is divisible only by 3 and not by 8, it is not divisible by 24.**