Q. 1. If A x B={(5,5),(5,6), (5,7), (8,6), (8, 7), (8,5)}, then the value A is (a) {5} (6) {8} (c) {5.8) (d) {5.6.7.8}
Answers
To find:
The set A from the options
(a) {5}, (b) {8}, (c) {5, 8}, (d) {5, 6, 7, 8}
Concept:
- Cartesian product: If A × B be a set of ordered pairs, then the first element belongs to set A and the second element belongs to set B.
- Mathematically, A × B = {(a, b) : a ∈ A and b ∈ B}.
Step-by-step explanation:
Given, A × B = {(5, 5), (5, 6), (5, 7), (8, 6), (8, 7), (8, 8)}
From the definition of Cartesian product, we can say that the elements 5, 8 ∈ A, since they are the first elements in the given ordered pairs.
Final answer: (c) {5, 8}
The set A is given by {5, 8}.
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Answer:
{5,8}
Step-by-step explanation:
you know for multiplying elements in this question then first element will be the elements from set A and the sencond element from Set B so 5,8 remain to be common as first elements.