Q.

Let G1, G2 be the geometric means of two
series x1,x2,xn;y1,y2yn If G is the geometric mean

of xi/yi,i=1,2,n then G  is equal to

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a

G1G2

b

logG1/G2

c

none of these

d

logG1/logG2

answer is D.

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Detailed Solution

detailed_solution_thumbnail

G1=x1,x2xn1/nand G2=y1,y2yn1/n

G=x1y1x2y2xnyn1/n=x1x2xn1/ny1y2yn1/n=G1G2

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