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JEE Main 20252 AprilMorning Shift
Exam
JEE Main
Year
2025
Date
2 April
Shift
Morning Shift
Subject
Mathematics
Chapter
Permutation and Combination

JEE Main 2025 · 2 April · Morning Shift · Mathematics · Permutation and Combination

The number of sequences of ten terms, whose terms are either 0 or 1...

The number of sequences of ten terms, whose terms are either 0 or 1 or 2 , that contain exactly five 1 s and exactly three 2 s , is equal to

Options

  1. A360
  2. B45
  3. C2520
  4. D1820

Correct answer

C. 2520

Step-by-step solution

11111 222 00
No. of sequences =10!5!3!2!=2520=\frac{10!}{5!3!2!}=2520
Note : Sequence can start with 0.
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