Question

11. If the nth term of an AP is equal to 2n, then the common difference is
a. 1.
b. 2.
c. 3.
d.4​

Answer 1

Answer:

b) 2

Step-by-step explanation:

These types of questions is solved using putting values in place of n

2(1) = 2

2(2) = 4

2(3) = 6

Therefore, the AP is 2,4,6, ........

d = a2-a1 = 4-2 = 2

Hence the common difference is 2