Slot method
5 slots
1st slot: 20
2nd slot: 19 (1 went to first slot)
3rd slot: 18
4th slot: 17
5th slot: 16
20*19*18*17*16=186,040 ways
So what you need to do is find the volume and divide it by 2.
Step-by-step explanation:

Answer:
y=16(x)+7(y)
y=16 + 7
y=23
im not sure bc is nt info but i think i this
Step-by-step explanation: