Let's Practice
Solve for the unknown in each number. Write your answer in a separate sheet
of paper. Write your complete solution.
1. Given 1 = 9
F1G 3=5, find the number of combination of objects.
2. !(1, 2) = 21
3. !(11,5) =
4. !(9, 3) = 84
5. !(12,7) =​

answer with solution please!.​