Question

the sum of three numbers in AP is 15 if 1, 4 and 19 be added to them respectively, the results are in GP the numbers are
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Answer 1

Step-by-step explanation:

Let three numbers in A.P. are a−d,a,a+d. ∴The numbers are 5−d,5,5+d. ∴ d=−21 or 3. Hence the numbers are 26,5,−16 or 2,5,8