Q21 of 176 Page 21

Mark the correct alternative in each of the following:

Let x be the A.M. and y, z be two G.M.s between two positive numbers. Then, is equal to


Let the numbers be a,b.


a,x,b = 2x =a+b


a,y,z,b = y2 = az ; z2 =by [a,b,c GM =b2 =ac]


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