JEE Main20252 Apr 2025Morning ShiftMathematicsPermutation and CombinationActual
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
- A360
- B45
- C2520
- D1820
Correct answer
C. 2520
Step-by-step solution
11111 222 00 No. of sequences = 10! 5!3!2! =2520 Note : Sequence can start with 0.