The first digit of the password can be any of the ten digits - 10 possibilities.
A digit cannot be repeated, so the second digit can be any digit except the one you chose for the first digit - 9 possibilities.
The third digit can be any digit except the digits you chose for the first and second digit - 8 possibilities.
Using the rule of product:

There are 720 passwords.
ANSWER:
32
EXPLANATION:
8 people jog and do Aerobics
24 jog but don’t do aerobics
So, 8+24= 32
Answer:
8 =x 4=y
Step-by-step explanation:
hope this helps
It's one solution.
no matter how you solve it, it will equal j = 1.
Answer:
6r+7=13+7r
6r+7=7r+13
6r+7−7r=7r+13−7r
−r+7=13
−r+7−7=13−7
−r=6
= 
r=−6
Step-by-step explanation:
:) This is the answer