Sum of first n terms of an A.P. whose last term is
l and common difference is d, is

What is the sum of first n terms of an A.P. whose first term is 'a' and common difference is 'd'?

Find the mean of first n terms of an A.P. whose first term is a and common difference is d.

Find the mean and standard deviation of first n terms of an A.P. whose first term is a and common difference is d.

Determine mean and standard deviation of first n terms of an A.P. whose first term is a and common difference is d.

Fill the gap The sum of n terms of an A.P. whose first term is a and common difference is d is

The sum of n terms of an A.P. whose first term is 5 and common difference is 36 is equal to the sum of 2n terms of another A.P. whose first term is 36 and common difference is 5. Find n.

If a_n is the n^(th) term of an A.P whose first term is a and common difference is d, prove that n=(a_n-a)/d+1

A sequence is called an A.P if the difference of a term and the previous term is always same i.e if a_(n+1)- a_(n)= constant ( common difference ) for all n in N For an A.P whose first term is 'a ' and common difference is d has n^(th) term as t_n=a+(n-1)d Sum of n terms of an A.P. whose first term is a, last term is l and common difference is d is S_(n) = n/2 (2a +(n-1)d)=n/2 (a+a+(n-1)d)= n/2 (a+l) If sum of n terms S_n for a sequence is given by S_n=An^2+Bn+C , then sequence is an A.P. whose common difference is

What is the n^(th) term of an A.P. whose first term is 'a' and common difference is 'd'?