A 4-digit pin number is to be created using the digits 0 through 9. The first digit must be a 5 or an 8, and the last digit cannot be 0. How many pin numbers can be created?

A.

5,040

B.

6,561

C.

1,458

D.

1,800

Question

Will Ramsey

Mathematics

11 August, 15:56

A 4-digit pin number is to be created using the digits 0 through 9. The first digit must be a 5 or an 8, and the last digit cannot be 0. How many pin numbers can be created?

A.

5,040

B.

6,561

C.

1,458

D.

1,800

+2

Answers (1)

Know the Answer?

Raquel Watkins · Answer 1

First digit:5 or 8 so 2 possible numbers

Second:Any of 0 to 9 so 10 possible numbers

Third:Any of 0 to 9 so 10 possible numbers

Last:Any of 1 to 9 so 9 possible numbers

So Answer is,

2*10*10*9=1800

A 4-digit pin number is to be created using the digits 0 through 9. The first digit must be a 5 or an 8, and the last digit cannot be 0. How many pin numbers can be created?A.5,040B.6,561C.1,458D.1,800

A 4-digit pin number is to be created using the digits 0 through 9. The first digit must be a 5 or an 8, and the last digit cannot be 0. How many pin numbers can be created?

A.

5,040

B.

6,561

C.

1,458

D.

1,800