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Functions question

2022 · 28 Jun · Shift 2 · Q49

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JEE Main
Mathematics
Functions
2022 · 28 Jun · Shift 2 · Q49

Functions question

2022 · 28 Jun · Shift 2 · Q49

JEE MainMathematicsFunctionsNumerical+4 / −1

Let S = {1, 2, 3, 4}. Then the number of elements in the set { f : S

\times

S

\to

S : f is onto and f (a, b) = f (b, a)

\ge

a

\forall

(a, b)

\in

S

\times

S } is

\underline{\hspace{2cm}}

.

Numerical answer

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