Find the sum of the following arithmetic progressions:
41, 36, 31, … to 12 terms
for the given AP the first term a is 41, and common difference d is a difference of the second term and first term, which is 36 - 41 = - 5
To find: the sum of given AP
The formula for sum of AP is given by
Substituting the values in the above formula
s = 6 × 27
s = 162