1.

The value of log√b a \(\text{log}_\sqrt[3]{c}\)  b \(\text{log}_\sqrt[4]{c}\) c is:(a) 1 (b) 10 (c) 24 (d) 0

Answer»

(c) 24

Using the formula logan x\(\frac{m}{n}\) loga x , we have

 log√b a \(\text{log}_\sqrt[3]{c}\)  b \(\text{log}_\sqrt[4]{c}\) c = \(\text{log}_{b^\frac{1}{2}}\) a \(\text{log}_{c^\frac{1}{3}}\) b \(\text{log}_{a^\frac{1}{4}}\)c

= 2 logba × 3 logcb × 4 logac

= 24 \(\frac{log\,a}{log\,b}\times\frac{log\,b}{log\,c}\times\frac{log\,c}{log\,a}\) = 24.



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