Byron bought a keyless entry door lock that has the digits 0 through 9 on the keypad. He wants to choose a three-digit entry code. How many different combinations are possible, if the digits can be repeated?
27
30
729
1,000
There are 10 possible choices for the first number, 10 for the second, and 10 for the third. Multiplying all of this together, you get 10*10*10=1000 possible combinations. Hope this helps!
Explanation: He wants to choose a three-digit entry code. he has the digits 0 through 9 on the keypad. so you have 10 choices on the first number 10 choices on the second number and 10 choices on the third number.
