Question

In an arithmetic progression if a n = 2n + 1 , then the common difference of the given progression is

Answer 1

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.

Answer 2

Step-by-step explanation:

term an =2n+1

1st term =3

2nd term=5

then

d=a2-a1

d=5-3

=2