4 boys and 4 girls are to seated in arow ino of

Question

4 boys and 4 girls are to seated in arow

i)no. of girls sit together

ii)not all girls sit together

iii)boys and girls are altenate to each other

iv)if a particular boy and girl are a couple find no. of ways they are never together

v)in how many ways 4 boys and 4 girls can be seated in alternate arrangement manner

Solution:)
1.⁵P₅*⁴P₄

2.⁸P₈-⁵P₅*⁴P₄

3.2*⁴P₄*⁴P₄