TNPSC Group 2 · 2016 Preliminary Examination
192. If \(\dfrac{a}{b}=\dfrac{4}{5}\) and \(\dfrac{b}{c}=\dfrac{15}{16}\) then, the value of \(\dfrac{c^{2}-a^{2}}{c^{2}+a^{2}}\) is
Answer:
B.
\(\dfrac{7}{25}\)