Find the $LCM(26, 91)$.

The last digit of $2^{m} \cdot 5^{n}$ (where $m, n \in N$) is . . . . . . .

The Least Common Multiple $(LCM)$ of the smallest prime number and the smallest composite number is . . . . . . .

The Least Common Multiple $(LCM)$ of the smallest prime number and the smallest composite number is . . . . . . .

The $HCF$ of $6$ and $20$ is .......

The Greatest Common Divisor $(GCD)$ of $5$ and $15$ is $10$. State whether this statement is True or False.