Question

The common difference of the A.P, whose general term An=2n+1

Answer 1

Answer:

Step-by-step explanation:

an=a+(n-1)d=2n+1

if n=1

2(1)+1=2+1=3

=> a=3

if n=2,

2(2)+1=4+1=5=a2

CD=a2-a1=5-3=2

common difference=2