Question

If three numbers a , b , and c, are in A.P. , then prove that 2b = a + c.​

Answer 1

Answer:

Step-by-step explanation:

a,b,c are in AP

let d=common difference

d=b-a

d=c-b

therefore c-b=b-a

2b=a+c

Answer 2

Answer:

common difference is always same

common difference=b-a=c-b

2b=a+c

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