PERMUTATIONS AND COMBINATIONS

PERMUTATIONS AND COMBINATIONS Let us name the three pants as P , P , P and the two shirts as S , S . Then, these six possibilities can be illustrated in the Fig. . .

Let us consider another problem of the same type. Sabnam has school bags, tiffin boxes and water bottles. In how many ways can she carry these items (choosing one each). A school bag can be chosen in different ways.

After a school bag is chosen, a tiffin box can be chosen in different ways. Hence, there are × = pairs of school bag and a tiffin box. For each of these pairs a water bottle can be chosen in different ways. Hence, there are × = different ways in which, Sabnam can carry these items to school.

If we name the school bags as B , B , the three tiffin boxes as T , T , T and the two water bottles as W , W , these possibilities can be illustrated in the Fig. . . Fig .