Question

in how many ways 5boys and girls can be seated in a long bench so that each boy will sit between two girls?​

Answer 1

Answer:

2

Step-by-step explanation:

1212121212 or 2121212121

Answer 2

Answer:

Girls = G

Boys = B

It can be arranged as

GBGBGBGBGBG

Now girls' places are fixed so we take no. of ways in which boys can be arranged

First place any of the 5 boys can be placed

In second place any of the remaining 4 boys can be placed

In third place any of the remaining 3 boys can be placed

This goes on till the last place

So no. of ways = 5×4×3×2×1 = 5! = 120

120 ways