Mathematics · Vector Algebra

JEE Main 2026 — 24 January, Evening Shift — Question 9

The letters of the word "UDAYPUR" are written in all possible ways with or without meaning and these words are arranged as in a dictionary. The rank of the word "UDAYPUR" is :

  1. Option A:

    1580

    Correct
  2. Option B:

    1578

  3. Option C:

    1579

  4. Option D:

    1581

Answer: A

Step-by-step solution

Arrange letters of UDAYPUR alphabetically: A, D, I, P, R, U, U. Words starting with A: 6!2!=360\frac{6!}{2!} = 360. Words starting with D: 6!2!=360\frac{6!}{2!} = 360. Words starting with I: 6!2!=360\frac{6!}{2!} = 360. Words starting with P: 6!2!=360\frac{6!}{2!} = 360. Words starting with R: 6!2!=360\frac{6!}{2!} = 360. Words starting with UA: 5!=1205! = 120. Words starting with UDAP: 3!=63! = 6. Words starting with UDAR: 3!=63! = 6. Words starting with UDAU: 3!=63! = 6. Words starting with UDAYPRU: 11. Word UDAYPUR: 11. Total rank = 360+360+360+360+360+120+6+6+6+1+1=1580360+360+360+360+360+120+6+6+6+1+1 = 1580.

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Exam
JEE Main 2026
Subject
Mathematics
Chapter
Vector Algebra
Topic
Section Formula in Vectors
The letters of the word "UDAYPUR" are written in all possible ways… | JEE Main 2026 PYQ with Solution · DhiX AI