# CAT Quant Practice Problems

Question: Let a = p and b = q, where p and q are positive quantities.

Define $\begin{array}{l}{a_n} = p{b_{n - 1}},{\rm{ }}{{\rm{b}}_n} = q{b_{n - 1}},{\rm{ \;for\; even \;}}n > 1\\and{\;\rm{ }}{a_n} = p{a_{n - 1}},{b_n} = q{a_{n - 1}},{\rm{ for\;odd\;n>1?}}\end{array}$

Which of the following best describes ${a_n} + {b_n}$ for even ‘n’?

 7 13 11 9 15

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CAT Quant Practice Problems