Learn

Saturday, 31 October

JEE Main 2024 · MathsMultiple choiceSingle correctEasyConceptual

JEE Main 27 January 2024, Shift 1, Maths Q2

Question 2 of 90 in this shift, Maths question 2 of 30, Section A.

The function f:N−{1}→Nf:\mathbf{N}-\{1\}\to\mathbf{N}; defined by f(n)=f(n)= the highest prime factor of n, is :
  1. (1)one-one only
  2. (2)onto only
  3. (3)both one-one and onto
  4. (4)neither one-one nor ontoOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Relations and Functions
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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 108 of the 174 JEE Main shifts held from 2017 to 2026.