Question

A bag contain 5 bananas and 4 orange. In how many diff. ways can I make a selection so as to take atleast one banana and one orange???

Answer 1

Total number of bananas = 5.

Total number of oranges = 4.

(i) we have to select at least one banana from 5 bananas in {1,2,3,4,5} = 5 ways.

(ii) We have to select at least one orange from 4 bananas in {1,2,3,4} = 4 ways.

Total number of required ways = 4 * 5

                                                    = 20.

Hope it helps!