The first term of an A.P. is 2, and the last term is 50. The sum of all these terms is 442. Find the common difference.
given a1 = 2 and an = 50
To find: the common difference
we know that the sum of AP is given by the formula:
substituting the values in above equation we get
n = 17
Now for the finding number of terms, the formula is
we know that
d = 3