Review and Submit Fla 19 From a group of cight boys and four

Review and Submit Fla 19. From a group of cight boys and four girls, a boy and a girl will be selected to attend a conference. In how many ways can the selection be made? 40 12 32 28 Back Next

Solution

Ques 19) We need to select one from 8 boys. Number of ways = 8 . Again we need to select 1 from 4 girls. Number of ways this can be done = 4. Thus, total ways = 8*4 = 32

Ques 22) First position can be filled on 10 ways. After it is filled, 2nd position can be filled in 9 ways. Total number of ways = 10*9 = 90

Ques 23) Total number of ways = 4*5*(1+1) = 40