Question

permutation
please answer me the all 6,7,8 tommorow is my maths exam

Answer 1

solution 6....
we have to select 1 from each so the
no of ways=. (12c1)(18c1)(10c1)

solution 7....
similar as above
no of ways= (40c1)(40c1)(40c1)(40c1)


solution 8....
no of ways of choosing vowel=5c1
no of ways of choosing a consonant= 21c1
no of ways of choosing a number = 10c1

so no of ways to choose one from each=(5c1)(21c1)(10c1)