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jee_main_2025_29_jan_morning - Permutations and Combinations Topics

Master these core formulas and structures to solve almost any past paper question.

Sample Questions in this Chapter

QUESTION #56 Distribution into Groups
Let mathrmP be the set of seven digit numbers with sum of their digits equal to 11. If the numbers in mathrmP are formed by using the digits 1, 2 and 3 only, then the number of elements in the set mathrmP is :
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QUESTION #74 Permutations with Repetition
The number of 6-letter words, with or without meaning, that can be formed using the letters of the word MATHS such that any letter that appears in the word must appear at least twice, is
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YOUR FIRST PREP STEP STARTS HERE

We Map Every Repeating Question in Competitive Exams.

Say goodbye to generic mock test fatigue. RankBit uses smart analysis to group past exam questions into their foundational Repeating Question Types. Find chapter weightage, track repeating questions, and score higher with targeted practice.

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Choose an exam track below to find formulas per chapter and patterns.

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Mapping formulas and patterns across all tracks…

PATH A — FULL LENGTH PRACTICE

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Simulate real NTA exam conditions with fully tracked mocks. Time yourself against past papers.

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PATH B — TARGETED PRACTICE

Topic-wise Practice Hub

Practice past-year questions one chapter at a time. Pick an exam → subject → chapter and get every PYQ for that topic — pulled together from all past papers — with the chapter's key formulas alongside.

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