Question
Question: The no. of ways in which 6 boys and 6 girls can be seated in a row so that no two girls are together...
The no. of ways in which 6 boys and 6 girls can be seated in a row so that no two girls are together
A
( ∠6)2
B
∠7 ∠6
C
2(∠6)2
D
2∠7∠6
Answer
∠7 ∠6
Explanation
Solution
First, the six boys can be arranges in ∠6 ways. Then the 6 girls can be arranged in the 7 intermediate positions on 7P6 ways or ∠7 ways. Hence the regd. ways are ∠7 ∠6.