Discrete Maths - Sets
22. If f : A ---> B is a bijective function, then f -1of =
- Option : D
- Explanation :
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23. The set of all real numbers under the usual multiplication operation is not a group since
- Option : D
- Explanation :
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24. If (G, .) is a group such that (ab)- 1 = b-1 a-1, ∀ a, b ∈ G, then G is a/an
- Option : B
- Explanation :
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25. If * is defined on R* as a * b = (ab/2) then identity element in the group (R*, *) is
- Option : B
- Explanation :
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