Question

What term must be inserted between p + 7 and p + 3 to form an arithmetic sequence?

Answer 1

ANSWER:

Let the number inserted be 'X'

Now, the A.P forms is,.. p+7 , X , p+3

Or,

X - (p+7) = (p+3) - X

=> 2X = p+3+p+7

=> 2X = 2p + 10

=> 2X = 2(p+5)

=> X = p+5 ans.