2. Examples
1. Five couples want to have their picture taken. In how many can they arrange
themselves in a row if:
a. If they may stand anywhere?
b. Couples may stay together?
2.There are 4 different Mathematics books and 5 different Science books. In how
many ways can the books be arranged on a shelf if.
a. There are no restrictions
b. Books on the same subject must be placed together?
3. Activity # 6.
1.In how many ways can a group of 8 students stand in a row if three of them
insist to stay together?
2. In how many ways can 3 women and 4 men sit in a round table if the women
always sit together?
3.How many ways can the letters in the word ONLINE be arranged if
a. There are no restriction?
b. The letter E and O are together?
c. All consonants are together?
d. All vowels are together