AP ICET 2016 Paper

© examsiri.com

Question : 75 of 200

Marks: +1, -0

If

{a}*{b}=\;\;{{a}^{2}+{b}^{2}}/{{ab}}

then

(1∗2)∗3=

$21/30$
$61/30$
$61/15$
$61/3$

Solution:

Given :

a*b={a^2+b^2}/{ab}

∴(1^{*}2)={1^{2}+2^{2}}/{(1)(2)}-{5}/{2}

({5}/{2}*3)={({5}/{2})^{2}+3^{2}}/{{5}/{2}×3}={{25}/{4}+9}/{{5}/{2}×3}={61}/{30}

© examsiri.com

Go to Question:

Prev Question

Next Question