JEE Main Maths · Permutations and Combinations
Number of Surjective (Onto) Functions
Number of Surjective (Onto) Functions (Permutations and Combinations) was asked 3 times in 3 JEE Main shifts, 2023–2026, out of the 42 shifts Lumi analysed. 1 of the 3 had a numerical answer.
- Times asked
- 3
- in 3 shifts
- Years
- 2023–2026
- Usual format
- Single correct
- Calculation
- Pattern
- Occasional
- repeats across shifts
How it is asked
- Count digit strings using every given digit
- Count functions that are not onto
Difficulty
Easy 1Medium 2Hard 0
Where it sits
Chapter: Permutations and Combinations. Topic: Permutations and Combinations, 50 questions over 22 ideas.
Other repeat ideas in this topic
Every time it came
All 3 questions
Newest first, each with its options and official answer.
- 2 Apr 2026, Shift 1 · Q6The number of seven-digit numbers, that can be formed by using the digits and such that each digit is used at least once,…MediumSingle correct
- 4 Apr 2026, Shift 1 · Q4The number of functions , which are not onto, is:EasySingle correct
- 6 Apr 2023, Shift 1 · Q23The number of ways of giving 20 distinct oranges to 3 children such that each child gets at least one orange is ____________MediumNumerical value