Question

if a, b, c are in ap which of the following is correct a. 2a=b+c, b. b=a+c , c. c=a+b, d. 2b=a+c .​

Answer 1

Answer:

if a,b,c are in ap then 2b=a+c

Answer 2

Answer:

d) 2b = c + a

Step-by-step explanation:

Series : a, b, c

Common Difference =  b - a = c - b

∵ b - a = c - b

⇒ 2b = c + a