6 boys and 7 girls are available for a counselling. In how many ways, we can arrange them in a row,

M4maths Previous Puzzles

24 Nov 2011 corner

6 boys and 7 girls are available for a counselling. In how many ways, we can arrange them in a row, if middlest one is a boy and girls are sat on both the corners.

OPtion

1) 42*10!
2) 21*10!
3) 6*10!
4) 7*10!
5) 126*10!
6) 252*10!
7) 84*10!
8) 12*10!
9) 420
10) none of these

Solution

total number of methods = (6*7*6/2)*10! = 126*10!

Correct Option: 5 Best Solution (4)