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if 18,a,b,-3 are in Ap, then the value of a+b is ....... |
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Answer» A = 18-3 = 18 + 3d-3-18 = 3d-21/3 = dd =-7a = A + da = 18 +(-7)a = 11b = 18 +2(-7)b = 18-14b = 4a + b = 11 + 4 = 15 7 |
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