We want to buld 1 letter 'woids" using only the first n=11 feters of the alphabet for example, nn=5 we can use the frst 5 letters. {a,b,c;d,} (Recal, words are juit strings of letters, not necessariy actual Engytsh worits? a. How many of these words are there tola? b. How many of these words contain no tepeated letars? C How many of these woeds stait wien the sub.word "ade? 4. Howi inainy of theise words nither stat weh 'ade' or end wifs 'bet er hols? Note: You can ears partal eredr on mus prublem.

1. We want to buld 1 letter 'woids" using only the first n=11 feters of the alphabet for example, nn=5
we can use the frst 5 letters. {a,b,c;d,} (Recal, words are juit strings of letters, not necessariy
actual Engytsh worits? a. How many of these words are there tola? b. How many of these words
contain no tepeated letars? C How many of these woeds stait wien the sub.word "ade? 4. Howi
inainy of theise words nither stat weh 'ade' or end wifs 'bet er hols? Note: You can ears partal
eredr on mus prublem