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Lakshman Bhaiya asked Apr 3, 2020
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Lakshman Bhaiya asked Apr 3, 2020
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If $ x^{a}=y^{b}=z^{c} $ and $ y^{2}=zx $ then the value of $ \frac{1}{a} + \frac{1}{c}$ is :$ \frac{b}{2}$$ \frac{c}{2}$$ \frac{2}{b}$$ \frac{2}{a}$
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Lakshman Bhaiya asked Apr 3, 2020
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$\left [\frac{1}{1-x}+\frac{1}{1+x}+\frac{2}{1+x^{2}}+\frac{4}{1+x^{4}}+\frac{8}{1+x^{8}} \right ]$ equal to :$1$$0$$\frac{8}{1-x^{8}}$$\frac{16}{1-x^{16}}$
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Lakshman Bhaiya asked Apr 3, 2020
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If $t^{2}-4t+1=0$, then the value of $\left[t^{3}+1/t^{3} \right]$ is :$44$$48$$52$$64$
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Lakshman Bhaiya asked Apr 3, 2020
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If $a^{x}=b$, $b^{y}=c$ and $c^{z}=a$, then the value of $xyz$ is :$0$$1$$\frac{1}{3}$$\frac{1}{2}$