What do you need to figure out. i am happy to help
Answer:
a. 59049
b. 15120
Step-by-step explanation:
<u>a. If digits can be repeated:</u>
- There are 9 possible numbers for each digit
That is: possible 5-digit pass codes are 9×9×9×9×9==59049
<u>b. If digits cannot be repeated.</u>
There is
- 9 possibility for the first digit,
- 8 possibility for the second digit
- 7 possibility for the third digit
- 6 possibility for the fourth digit
- 5 possibility for the fifth digit
That is: possible 5-digit pass codes are 9×8×7×6×5=15120
Answer:
The answer is A.
Step-by-step explanation:
Because usually for more it will cost a lot more than just buying a single pack 5 times.
Answer:
Step-by-step explanation:
a+b=41
consecutive=>b=a+1
2a+1=41
2a=41-1=40
a=20 => b=20+1=21