If 18 , a, b, -3 are in AP , then a+b is equal to
Answers
Answered by
1
18, a, b, -3 are in AP
a1, a2, a3, a4
by rule a2 - a1 = a4 - a3
a - 18 = -3 - b
a + b = 18 - 3
a + b = 15
Similar questions