Mathematics · 2026
JEE Main · 21 January 2026, Shift 1 · Q6
The number of strictly increasing functions f from the set {1, 2, 3, 4, 5, 6} to the set {1, 2, 3,...., 9} such that f(i) ≠ i for 1 ≤ i ≤ 6, is equal…
The number of strictly increasing functions $\displaystyle f$ from the set {$\displaystyle 1$, $\displaystyle 2$, $\displaystyle 3$, $\displaystyle 4$, $\displaystyle 5$, $\displaystyle 6$} to the set {$\displaystyle 1$, $\displaystyle 2$, $\displaystyle 3$, ...., $\displaystyle 9$} such that $\displaystyle f(i) \neq i$ for $\displaystyle 1 \leq i \leq 6$, is equal to :
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle 28$
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JEE Main 2026 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.