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if a,b,cgt 0 and are `p^(th ) ,q^(th),r^(th)` term of a G,P respectivelt then `|{:(log a^(2),p-1,3),(log b^(4),2(q-1),6),(log c^(8),4(r-1),12):}|` is equal to -A. -1B. 1C. 0D. none of these |
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Answer» Correct Answer - C `a=Xy^(p-1),B=Xy^(q-1),c=Xy^(r-1)` `Delta=|{:(log a^(2),p-1,3),(logb^(4),2(q-1),6),(log c^(8),4(r-1),12):}|` `=|{:("2{log x+(p-1)log y}",p-1,3),("4{logx+(q-1)log y}",2(q-1),6),("8{log x+(r-1) log y}",4(r-1),12):}|` `=|{:("2{log x+(p-1)log y}",p-1,3),(" ""4(q-1)log y",2(q-1),0),(" ""8(r-1) log y",4(r-1),0):}|=0` |
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