Question

if 18 , a, b, 13 are in ap then a+b ,=​

Answer 1

Step-by-step explanation:

As the series is in AP.

a - 18 = 13 - b

(A2-A1 = A4- A3)

so, a + b = 13 + 18

a + b = 31

Answer 2

Answer:

a+b=31

hey mate here's ur answer!