Question

if the 1st,2nd and 3rd term of the expression (1+x)^n are in AP then find the value of n

Answer 1

Answer:

Step-by-step explanation:

By solving with the help of the equation

Sn=n/2(a+l)

We get n=10

Puting the value in

Tn=a+(n-1)d

By solving this equation

We get d=3

HOPE THIS WILL HELP U