SOLUTION: The access code for a car's security system consists of four digits. The first digit cannot be 9 and the last digit must be even. How many different codes are available?
Algebra.Com
Question 1041396: The access code for a car's security system consists of four digits. The first digit cannot be 9 and the last digit must be even. How many different codes are available?
Answer by jorel555(1290) (Show Source): You can put this solution on YOUR website!
If the first digit can't be 9, that leaves the digits 0-8. The last digit must be even, so that leaves the digits 2,4,6,8. So, we have:
9x10x10x4 combinations available, or 3600 combinations. ☺☺☺☺
RELATED QUESTIONS
The access code for a car's security system consists of four digits. The first digit... (answered by stanbon,jerryguo41)
The access code for a cars security system consists of four digits. The first digit... (answered by Fombitz)
The access code for a car's security system consists of four digits. The first digit... (answered by Edwin McCravy)
The access code for a car's security system consists of 4 digits. The first digit cannot (answered by stanbon)
The access code for a car's security system consists of five digits. The first digit... (answered by Fombitz)
The access code for a car's security system consists of five digits. The first digit... (answered by Alan3354)
The access code for a car's security consists of four digits. The first digit cannot be... (answered by Fombitz)
An access code for a security system consists of a letter followed by four digits. The... (answered by stanbon)
The access code for a car's security system consists of six digits. The first digit... (answered by ikleyn)