The last digit of $2^5 \cdot 5^5$ is........

If $HCF(p, q) = p$,then $LCM(p, q)$ is equal to . . . . . . .

Express the number $7429$ as a product of its prime factors.

Find the $HCF$ and $LCM$ of the following pair of integers $510$ and $92$ and verify that $HCF \times LCM = \text{product of the two numbers}$.

Find the smallest integer that is divisible by both $28$ and $63$.

If $P(-7) = 0$,then one factor of $P(x)$ is . . . . . . .