Mathematics · 2026
JEE Main · 24 January 2026, Shift 1 · Q1
Let R be a relation defined on the set {1,2,3,4} ×{1,2,3,4} by R ={((a, b),(c, d)): 2 a+3 b=3 c+4 d}. Then the number of elements in R is
Let R be a relation defined on the set $\displaystyle \{1,2,3,4\} \times\{1,2,3,4\}$ by
$$\mathrm{R}=\{((a, b),(c, d)): 2 a+3 b=3 c+4 d\} .
$$
Then the number of elements in R is
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle 12$
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JEE Main 2026 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.