$(90 + 91 + 92 + \ldots + 110)$ is equal to

Three numbers are in the ratio $3:4:5$. The sum of the largest and the smallest equals the sum of the third and $52$. The smallest number is

For any integral value of $n$,$3^{2n} + 9n + 5$ when divided by $3$ leaves the remainder:

$\left[(72)^{2} \div 36+(?)^{2}\right] \div 5=45$

On dividing a number by $38$, we get $90$ as quotient and $19$ as remainder. What is the number?

When $2^{23}$ is divided by $10$,the remainder will be