Question

7. If nth term of an A.P is 7 - 2n, then find
common difference.​

Answer 1

Answer:

A1 will be 7-2×1 = 5

A2 = 7-2×2 = 3

a3 = 7-2×3 = 1

then

Common difference will be 3-5 = -2

hope it helps...

Answer 2

Answer:

Hey mate here's your answer.

Step-by-step explanation:

an=7-2n

a1=7-2(1)

=7-2

=5

a2=7-2(2)

=7-4

=3

Common difference,d=a2-a1

=3-5

=-2

Hope it helps you.

Please mark it as brainliest answer.