What number will replace A, if 3313A is divisible by 33?

A number is composite if it has more than two factors. A number is divisible by a composite number if it is divisible by each of its factors.  Here are some examples of divisibility rules for composite numbers: 84846 is divisible by 6: 84846 is divisible by both 2 and 3, so it is divisible by 6. 16 is divisible by 2, 4, and 8: Any number is divisible by 16 if it is also divisible by 2, 4, and 8.  Here are some other divisibility rules: A number is divisible by a composite number if it is divisible by the highest power of each of its prime factors. If a number is divisible by any number... Show more

A number is composite if it has more than two factors. A number is divisible by a composite number if it is divisible by each of its factors. 

Here are some examples of divisibility rules for composite numbers:
84846 is divisible by 6: 84846 is divisible by both 2 and 3, so it is divisible by 6.
16 is divisible by 2, 4, and 8: Any number is divisible by 16 if it is also divisible by 2, 4, and 8. 

Here are some other divisibility rules:
A number is divisible by a composite number if it is divisible by the highest power of each of its prime factors.
If a number is divisible by any number other than 1 and itself, then the number is composite.
For example, 12 is a composite number because it can be divided by 1, 2, 3, 4, 6 and 12. 

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