Mathematics · 2021
JEE Main · 3 August 2021, Shift 2 · Q61
Let R be the set of real numbers and ' ' be a binary operation on R -{0} defined by a * b=a+2 b+a/b Then the operation ' ' is
Let $\displaystyle \mathbb{R}$ be the set of real numbers and '*' be a binary operation on $\displaystyle \mathbb{R}-\{0\}$ defined by
$$a * b=a+2 b+\frac{a}{b}
$$
Then the operation '*' is
Official answer
(4)
neither associative nor commutative.
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.