1
NDA Mathematics 18 April 2021
MCQ (Single Correct Answer)
+2.5
-0.83
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Let R be a relation defined as xRy if and only if 2x + 3y = 20, where x, y ∈ N. How many elements of the form (x, y) are there in R?
A
2
B
3
C
4
D
6
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