AKSHAY KUMAR3 years, 1 month ago QuestionThree positive numbers p, q and r are in AP such that p*q*r = 64. Find the minimum value of q.A2(1/3)B2(2/3)C22D2(4/3)Question Three positive numbers p, q and r are in AP such that p*q*r = 64. Find the minimum value of q. A 2(1/3) B 2(2/3) C 22 D 2(4/3) CancelSubmit 0 1 Comments LikeComment Share Facebook Twitter Google Copy Link Facebook Twitter Google Copy Link« PreviousNext »
2 years, 10 months ago
Let the three numbers be q-d, q, q+d
Therefore, q*(q^2-d^2) = 64
For q to be minimum, d has to be 0.
Hence, the minimum value of q is cube root of 64 = 4