Discrete Maths - Sets

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41. Let (Z, *) be an algebraic structure, where Z is the set of integers and the operation * is defined by n * m = maximum (n, m). Which of the following statements is TRUE for (Z, *) ?

Answer
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Array

Option : D
Explanation :

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42. Some group (G, 0) is known to be abelian. Then which one of the following is TRUE for G ?

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Option : C
Explanation :

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43. If the binary operation * is deined on a set of ordered pairs of real numbers as
(a, b) * (c, d) = (ad + bc, bd)
and is associative, then
(1, 2) * (3, 5) * (3, 4) equals

Answer
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Array

Option : A
Explanation :

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44. If A = (1, 2, 3, 4). Let ~ = ((1, 2), (1, 3), (4, 2). Then ~ is

Answer
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Array

Option : B
Explanation :

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45. Which of the following statements is false ?

Answer
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Array

Option : D
Explanation :

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