In how many ways 3boys can be placed in 9seats in a single row such that no two boys are adjacent to eachother
Answers
Answered by
1
Answer: 84 ways.
Solution:
3 boys can be placed in 9 seats in a single row not adjacent each other.
So, they can be placed either odd place or even place.
Odd place: 1, 3, 5, 7, 9 ---> 5P3.
Even place: 2, 4, 6, 8 ---> 4P3.
5P3 + 4P3 = 60 + 24 = 84.
Solution:
3 boys can be placed in 9 seats in a single row not adjacent each other.
So, they can be placed either odd place or even place.
Odd place: 1, 3, 5, 7, 9 ---> 5P3.
Even place: 2, 4, 6, 8 ---> 4P3.
5P3 + 4P3 = 60 + 24 = 84.
Answered by
0
Answer:
Answer is 5c3*3! + 4c3*3!
Step-by-step explanation:
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