👤
Deyagulygo
Answered

Amir wants to create a 4-digit password for his phone. He wants to choose 4 different numbers between 1 and 5 inclusive. Calculate the total number of 4-digit passwords that Amir can create.​

Answer :

Mhanifago

Answer:

  • 625

Step-by-step explanation:

Let the digits be:

  • abcd

Each of them include numbers 1 through 5.

For each digit there are 5 options.

Total number of combinations is:

  • 5*5*5*5 = 625
The right answer is 120. Let abcd represent the numbers. The number have to be different meaning no repeats so that would mean:
a has 5 choices of numbers
b had 4
c has 3
d has 2
So the equation would be 5x4x3x2 = 120

Go Teaching: Other Questions