The sum of first $n$  terms of an AP is  $\left(3n^2+6n\right)$ . The common difference  $\left(d\right)$  of the AP is  ________

The 13^th term of an AP is 4 times its 3^rd term. If its 5^th term is 16, then the sum of its first ten terms is _______

The common difference of the AP  $\frac{1}{p}$ , $\frac{1-p}{p}$ , $\frac{1-2p}{p}$  , ........ is

Which term of an AP 72, 63, 54, ...... is 0 ?

The sum of first $n$  odd natural numbers is ____

The first and last terms of an AP are 1 and 11. If the sum of its terms is 36, then the number of terms will be _______

Formula to find sum of n terms in an AP is ________

The sum of first 20 odd natural numbers is

What is the common difference of an AP in which $a_{18}-a_{14}=32?$  

The 8th term of an AP is 17 and 14th term of an AP is 29. The common difference of the AP is _______

Which term of the AP 21, 42, 63, 84, . . . . is 210?