6.How many numbers of (i) three digits (ii) four digits, can be formed from the integers 3, 4, 5, 6, 7? 7. In how many ways can the letters of the following words be arranged - i) BUSINESS 11) STATISTICS 111) EXAMINATION iv) ACCOUNTANT v) MANAGEMENT.

8. If four boys and four girls are at a party, find the number of arrangement of eight people in eight seats in a circle. 10. hiento arrange them taking 1, 2, 3, 4 at a​