# Aptitude Question ID : 93809

If $x * y = x^{2} + y^{2} - xy$, then the value of 9 * 11 is
[A]121
[B]93
[C]113
[D]103

103
Given,
$x*y = x^{2}+y^{2}-xy$
$=> 9*11 = 9^{2}+11^{2}-9\times 11$
$=> 81+121-99$
$=> 202-99 = 103$
Hence option [D] is the right answer.