Question

If an = 2n -1 then the common difference of that Arithmetic Progression is
A) 1
B) 2
C) 3
D) 4.​

Answer 1

Answer:

2

Step-by-step explanation:

..................

Answer 2

Answer:

Option B is correct.

Step-by-step explanation:

If an = 2n -1 then the common difference of that Arithmetic Progression is

A) 1

B) 2

C) 3

D) 4

If

$an = 2n - 1$

first term; when n=1

$a = 2 \times 1 - 1 \\ \\ = 2 - 1 \\ \\ a = 1$

Second term; for n=2

$a1 = 2 \times 2 - 1 \\ \\ a1 = 3$

Common difference d=a1-a

=3-1

=2

Option B is correct.

Hope it helps you.