Arihant Expert Team Solutions for Exercise 2: Practice Exercise

If $K$ is an odd number, which of the following is true?

What will be the unit digit in the number $3^{68}\times 7^{93}\times {11}^{11}\times {96}^{84}$?

$XCVI$ denotes:

The roman numeral form of $98$ is?

The Hindu Arabic form of $LXIX$ is:

Solve $1^2+2^2+....+{20}^2$.

What will be the value of ${11}^2+{12}^2+....+{25}^2$?

Find the value of ${11}^3+{12}^3+....+{20}^3$.