Question

Three numbers a,b,c are in A.P then a plus c equal to

Answer 1

Answer:

2b

Step-by-step explanation:

Given a,b and c are in AP.....so let a be the first term

b=a+d,-----------------------1

c=b+d------------------------2

where d is common difference....

now,  b-a=d

c-b=d     (from1 and 2)

so, b-a=c-b

Transposing a and b,

2b=a+c