0 0 votes The binary operation $\square$ is defined as $a \square b = ab+(a+b)$, where $a$ and $b$ are any two real numbers. The value of the identity element of this operation, defined as the number $x$ such that $a \square x = a$, for any $a$, is $0$ $1$ $2$ $10$ Quantitative Aptitude gate2016 numerical-ability algebra + – Milicevic3306 7.9k points answer comment Share Follow 0 reply Please log in or register to add a comment.