Teaching Jharkhand (JSSC) TGT (6 to 8) Mock Test 2023-24 Mathematics Relations and Functions Binary Operations
The identity element for the binary operation * defined on Q ~ {0} as a * b = \(\frac{\text{ab}}{2}\) ∀ a, b ∈ Q ~ {0} is
1
1
2
0
3
2
4
none of these