Aspire Faculty ID #15211 · Topic: JAMIA MCA 2017 · Just now
JAMIA MCA 2017

Which of the following is not equivalent to $x$?

Solution

$x\cdot x = x$, $x + x = x$, $x\cdot1 = x$, but $x + 1 = 1 \neq x$. $\boxed{x + 1}$
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