JEE Main 15 April 2023, Shift 1, Maths Q23

Question 23 of 90 in this shift, Maths question 23 of 30, Section B.

The number of elements in the set

\{n\in\mathbb{N}: 10\le n\le 100

and

3^n-3

is a multiple of

7\}

is ______.

Official answer

NTA final key.

Chapter: Permutations and Combinations
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.