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प्रश्न
Define a binary operation on a set.
उत्तर
Let A be a non-empty set. An operation * is called a binary operation on A, if and only if
\[a * b \in A, \forall a, b \in A\]
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संबंधित प्रश्न
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(Hint: use the following table)
| * | 1 | 2 | 3 | 4 | 5 |
| 1 | 1 | 1 | 1 | 1 | 1 |
| 2 | 1 | 2 | 1 | 2 | 1 |
| 3 | 1 | 1 | 3 | 1 | 1 |
| 4 | 1 | 2 | 1 | 4 | 1 |
| 5 | 1 | 1 | 1 | 1 | 5 |
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| o | a | b | c | d |
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