John left school with 8.43 he found a quarter on his way home and then stopped to buy an Apple for 0.89 . how much money did he
2 answers:
You might be interested in
Answer:
680
Step-by-step explanation:
Use the binomial coefficient where you choose numbers out of
possible numbers and find the total amount of combinations since order does not matter:
Thus, you can make 680 three-non-repeating-number codes