Answer:
1. 40,320
[tex]8! = 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 \\ = 40320[/tex]
2. 3,628,800
[tex](9 + 1)! = 10! = 10 \times 9 \times 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 \\ = 3628800[/tex]
3. 4,320
[tex]6!(5 - 2)! = 6!3! = 6 \times 5 \times 4 \times 3 \times 2 \times 1 \times 3 \times 2 \times 1 \\ = 4320[/tex]
4. 144
[tex]4! + 5! = 4 \times 3 \times 2 \times 1 + 5 \times 4 \times 3 \times 2 \times 1 \\ = 144[/tex]
5.29,030,400
[tex]8!6! = 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 \\ = 29030400[/tex]
(Note: Kindly swipe sa gilid kase medyo mahaba yung solution. Salamat!)