Mathematics · Relations and Functions
Let A = {1, 2, 3, 4} and R be a relation on the set A × A defined by R = {((a, b), (c, d)) : 2a + 3b = 4c + 5d}. Then the number of elements in R is:
- 14
- 25
- 36✓
- 48
Correct answer
6
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