MathsJEE Main 23 Jan 2026, Shift 2·Q25·Numerical·Moderate

Permutations & Combinations · Counting numbers by digits

Let

S

denote the set of 4-digit numbers

abcd

such that

a > b > c > d

and

P

denote the set of 5-digit numbers having product of its digits equal to 20. Then

n(S) + n(P)

is equal to .

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