Mark the correct alternative in each of the following:

The two geometric means between the numbers 1 and 64 are


Let the GM be y,z


∴ 1,y,z,64


y2 = 1.z ; z2 =64y


y4 = z2


∴ y4 =64y


⇒ y = 4


∴ Z =16


∴ The two GM are 4,16.

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