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If a,x,b are in A.P.,a,y,b are in G.P. and a,z,b are in H.P. such that x=9z and `gt0,bgt0`, thenA. `|y|=3z`B. `x=3|y|`C. `2y=x+z`D. none of these |
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Answer» Correct Answer - B x is A.M. of a and b, y is G.M. of a and b ,z is H.M. of and b. `y^(2)=xz` Also given, x=9z `rArrx=9y^(2)//x` `rArrx=3absy` |
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