JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

1 Easy

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Application +4 | -1

{\left( {4.2} \right)^x} = {\left( {0.42} \right)^y} = 100,

then

\frac{1}{x} - \frac{1}{y} =

View answer and explanation

Correct option: C

\frac{1}{2}

Option C (1/2) is correct because by taking logarithms and manipulating the equations, we can find that 1/x - 1/y equals 1/2.

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