JEE Main 2023MathematicsSets And RelationsNumber Of Sets And RelationsmediumNumerical

JEE Main 2023Sets And Relations Question with Solution

From: JEE Main 2023 (Online) 25th January Morning Shift

Question

Let S = {1, 2, 3, 5, 7, 10, 11}. The number of non-empty subsets of S that have the sum of all elements a multiple of 3, is _____________.

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Show full solutionCorrect answer: 43
Correct answer
43

Step-by-step explanation

Elements of the type

Elements of the type

Elements of the type

Subsets containing one element

Subsets containing two elements



Subsets containing three elements



Subsets containing four elements



Subsets containing five elements



Subsets containing six elements

Subsets containing seven elements

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About this question

This is a previous-year question from JEE Main 2023, covering the Sets And Relations chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.