JEE Main 2026 · MathsMultiple choiceSingle correctEasyCalculation

JEE Main 4 April 2026, Shift 1, Maths Q4

Question 4 of 75 in this shift, Maths question 4 of 25, Section A.

The number of functions

f:\{1,2,3,4\}\to\{a,b,c\}

, which are not onto, is:

(1) $48$
(2) $45$ Official answer
(3) $51$
(4) $35$

Official answer

Option 2

NTA final key.

Chapter: Relations and Functions
Topic: Permutations and Combinations
Idea tested: Number of Surjective (Onto) Functions

Same idea in other shifts

Asked 3× in all

2 Apr 2026, Shift 1 · Q6The number of seven-digit numbers, that can be formed by using the digits $1, 2, 3, 5$ and $7$ such that each digit is used at least once,…MediumSingle 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

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.