Question

find sum of first 11 term of an AP 2,6,10​

Answer 1

Answer:

42

Step-by-step explanation:

Here, a=2, d=4

now,

Tn=a+(n-1)d

therefore T11 = 2 + (10)4

= 2+ 40

= 42

Answer 2

Answer:

132

Step-by-step explanation:

n/2[2a+(n-1)d]=sum of ap series

n= number of terms

a = first number in ap series