1.

The value of `0. 2^(logsqrt(5)1/4+1/8+1/(16)+)`is`4`b. `log4`c. `log2`d. none of theseA. 4B. log 4C. log 2D. none of these

Answer» Correct Answer - A
We have,
`1/4+1/8+1/16+…=(1//4)/(1-1//2)=1/2`
Hence,
`0.2^(log_(sqrt5(1/4+1/8+1/16+..)))=0.2^(log_(sqrt5)""1/2)`
`=(1/5)^(log_(sqrt5)""1/2)`
`=(5^(-1))^(2log_(5)""1/2)`
`(5)^(-2log_(5)""1/2)`
`=(5)^(log_(5)4)=4`


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