Question

In an arithemetic progression if
an=2n+1 then the common difference
of the given progression is?
​

Answer 1

Answer:

an=2n+1

so, A1=2(1) +1

=2+1 =3

A2=2(2)+1 =4+1=5

So, d=a2-a1=5-3=2

therefore Common difference is 2

Answer 2

Answer:

》In an arithmetic progression if a

n=2n+1.

Find:

》Find the common difference of the

given progression.

Know terms:

》Term= 2n + 1

1st term = 3

2nd term = 5

Using formula:

》 Common difference = Second term -

First term.

Calculations:

Difference = 5-3

= Difference = 2

Therefore, 2 is the common difference.