The access code for a car\'s security system consists of four digits. The first

Question

The access code for a car's security system consists of four digits. The first digit cannot be 8 and the last digit must be even. How many different codes are available? The access code for a car's security system consists of four digits. The first digit cannot be 8 and the last digit must be even. How many different codes are available? The access code for a car's security system consists of four digits. The first digit cannot be 8 and the last digit must be even. How many different codes are available?

Explanation / Answer

Ans:

There are 10 digits,0,1,2,3,4,5,6,7,8,9

middle to digits can be formed, 10*10

First digit can be in 9 ways(eexcept 8)

last digit can be in 5 ways(0,2,4,6,8)

Hence total different number of codes possible=9*10*!0*5=4500

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.