Arithmetic Progressions Quiz 15

Which term of the A.P. 5, 2, -1, ……………….. is -22 ?

Which term of 7 + 11 +15 + ………………. is 67?

Which series is equal to $\frac{n(n+1)}{2}$ ?

Which term of 0.004, 0.02, 0.1, ......… is 12.5 ?

Which term of  $2-\frac{1}{\sqrt2}+\frac{1}{4}-.......$ is $\frac1{32}?$

$n^{th}$ term of 4 + 9 + 14 + …………….. is

If x, y, z are in A.P, then 2y =

The ratio of the sums of m arithmatic means and n arithmetic means between two numbers is

If the ratio of sum of n terms in two A.P is 2n : n + 1, then the ratio of 8th terms is ………

Arithmetic mean of a and b is