Question

if A.P, if an = 2n+1, then the common difference of the given progression​

Answer 1

Answer:

given an=2n+1

for first term n=1,a1=2(1)+1

a1=3

for second term n=2

a2=2(2)+1

a2=5

common defference,d=a2-a1

d=5-3

d=2