Math, asked by tapanacharya1219, 9 months ago

If 18 , a, b, -3 are in AP , then a+b is equal to

Answers

Answered by harshit9927

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

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