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If a,b,c,d,e be 5 numbers such that a,b,...

If a,b,c,d,e be 5 numbers such that a,b,c are in A.P; b,c,d are in GP & c,d,e are in HP then prove that a,c,e are in GP

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The correct Answer is:
(iii) `b = 4, c = 6, d = 9 " or " b = -2, c = -6, d= - 18`
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