Question

If 3, x+1 , 5 are in A. P, the find the value of 'x'.​

Answer 1

Answer:

in a. p, common difference

(d) = a3-a2 = a2-a1

or, d= 5-(x-1) =(x+1)-3

or, d= 5-x+1=x+1-3

or, 6= 2x-2

or, x-1=3 (dividing both sides by 2)

or, x= 4