Question

In how many ways can 1 boys and 5 girls sit in a line if the boy must sit at the beginning position?

Answer 1

Answer:

6 ways the girls sit at the beginning

Answer 2

Answer:

if you start with girls.

first girl selected 5ways

then first boy selected 5 ways

then 2 girl selected 4ways

then 2boy selected 4 ways

.... so go on until you reach

the 5girl. selected 1way

then 5 boy selected 1 way

total way if we start with girl

5*5*4*4*3*3*2*2*1*1=(5!)^2=(120)^2=14400