If \frac{a}{b} = \frac{4}{5} and\frac{b}{c} = \frac{15}{16} then, the value of {c^{2}−a^{2}}/{c^{2} + a^{2}} is

TNPSC Group 2 2016 Paper

Question : 92 of 100

Marks: +1, -0

\;{a}/{b} = \;{4}/{5}

and

\;{b}/{c} = \;{15}/{16}

then, the value of

\;{c^{2}−a^{2}}/{c^{2} + a^{2}}

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