M L Aggarwal Solutions for Exercise 6: Multiple Choice Questions

In an arithmetic progression, if $a=-5, l=21$ and $S=200$, then $n$ is equal to

The sum of first five multiples of $3$ is

The number of two digit numbers which are divisible by $3$ is

The number of multiples of $4$ that lie between $10$ and $250$ is

The sum of first $10$ even whole numbers is

The ${11}^{\mathrm{th}}$ term of the $\mathrm{G}.\mathrm{P}.$ $\frac{1}{8}, -\frac{1}{4}, 2, -1, \dots ...$ is

The $5^{\mathrm{th}}$ term from the end of the geometric progression $2, 6, 18, \dots ..., 13122$ is

If $k, 2\left(k+1\right), 3\left(k+1\right)$ are three consecutive terms of a geometric progression, then the value of $k$ is