The answer is
3 + (2) (4) - 4
answer is 7
Slot method
8 optionns n 1st slot
7 options in 2nd slot (since 1 is at 1st slot)
6 options in 3rd slot
5 options in 4th slot
8*7*6*5=1680 ways
Answer:
Step-by-step explanation:
Answer:
-54
Step-by-step explanation: