# Math

A mini license plate for a toy car must consist of two numbers followed by a letter. Each number must be a 5, 7 or 9. Each letter must be a C, A or N. Repetition of digits is NOT permitted.

Use the counting principle to determine the number of points in the sample space.
Construct a tree diagram to represent this situation. List the sample space.
Determine the exact probability of creating a mini license plate with a 5. Give solution exactly in reduced fraction form.

I'm not sure what to do....

1. 👍 0
2. 👎 0
3. 👁 77
asked by Jen
1. Hard to draw here

top row ***** 5 ***** 7 ***** 9*****
row 2 ******7***9***5***9***5****7
row 3 *****can can can can can can

so 3 * 6 = 18 possible

how many with 5 in first row? 3*2=6
How many with 5 in row 2? 3+3 = 6
so 12/18 have 5 in them
= 2/3

1. 👍 0
2. 👎 0
posted by Damon
2. hmmmmm.....

1. 👍 0
2. 👎 0
posted by Jen

## Similar Questions

1. ### math

how do you explain this questionA mini license plate for a toy car must consist of a letter followed by two numbers. Each letter must be a T, O or Y. Each number must be a 4 or 6. Repetition of digits is permitted. Use the

asked by kozy on June 5, 2011
2. ### MATH-SO LOST :(

A mini license plate for a toy car must consist of a number followed by two letters. Each letter must be a C, A or R. Each number must be a 3 or 7. Repetition of letters is permitted. Use the counting principle to determine the

asked by Jen on July 26, 2011
3. ### survey of math

A license plate is to consist of 2 letters followed by 3 digits. Determine the number of different license plates possible if repetition of letters and numbers is not permitted?

asked by anjanette on November 29, 2012
4. ### Math

How do I work this problem? A license plate is to consist of 2 letters followed by 5 digits. Determine the number of different license plates possible if repetition of letters and numbers is not permitted. is this correct

asked by Sabrina on July 9, 2014
5. ### math

suppose a license plate for a car has 4 letters followed by 1 number and 3 more letters. The letters and numbers are chosen randomly. a. how many license plates are possible? b. compare the probability that a license plate spells

asked by Mackenzie on February 26, 2008
6. ### Math

Some fleet car license plates contain 4 numbers followed by 3 letters and then another 3 numbers. If this were the standard fleet car license plate and there are no other constraints, the number of plates that could be

asked by Jessica on April 11, 2014
7. ### college math

a license plate is to consist of three digits followed by two uppercase letters. determine the number of different license plates possible. the first digit cannot be zero and repition is not permitted.

asked by ashley on November 22, 2011
8. ### Math

Analyze Greg saw these numbers on a license plate while driving: 2,4,5,3 and 9 . Write one possible number that could be on the license plate. Help me,,

asked by Nina on September 13, 2014
9. ### math

A car license plate consists of 6 characters. The first 2 characters are any letter. The last 4 characters are odd numbers from 1 to 9 inclusive. How many different license plates are possible? Please show your work.

asked by corey on May 23, 2011
10. ### Physics

A spy camera is said to be able to read the numbers on a car's license plate. If the numbers on the plate are 6.0 cm apart, and the spy satellite is at an altitude of 160 km, what must be the diameter of the camera's aperture?

asked by Anonymous on November 22, 2009

More Similar Questions