Q. 23

Mark the correct A. 1 and 64

B. 4 and 16

C. 2 and 16

D. 8 and 16

Answer :

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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