Question

Find the sum of the 11th terms of an AP .whose middle term is 30.

Answer 1

n(number of terms)=11
middle term=11
sum(sn)= n*middle term
 =11*30
=330

sum of the 11 terms=330

Answer 2

Number of term= 11
Middle term= 30
Sum=Number of term*Middle term
Sum=11*30
=330.