Thursday

July 31, 2014

July 31, 2014

Posted by **is this right!!!** on Tuesday, June 16, 2009 at 11:03am.

- math -
**Reiny**, Tuesday, June 16, 2009 at 11:11amodds in favour of some event

= prob(of that event/prob(not that event)

primes form 1 to 6 are 2,3, and 5

so prob of a prime = 3/6 = 1/2

so prob of not a prime = 1-1/2 = 1/2

so the odds in favour of a non-prime = (1/2) ÷ (1/2)

= 1:1

- math -
**John**, Tuesday, June 16, 2009 at 11:16amfirst off, what are the prime numbers?

a prime number is any number divisible by one and itself.

1, 2, 3, 5, are all prime numbers.

although 1 can be controversial. Some teachers consider 1 as a prime but some not. anyways assuming 1 is a prime. there is a total of 4 primes.

a dice has six sides of six numbers total.

so the probablility of rolling a prime number is:

4/6 and if you simplify: 2/3

but if you don't consider 1 as a prime:

the answer would be: 3/6 and simplify: 1/2

- math -
**Reiny**, Tuesday, June 16, 2009 at 11:21amEuler considered 2 to be the first prime, and who are we to argue against Euler.

- math -
**hannah**, Saturday, March 26, 2011 at 8:10pmyes

**Related Questions**

math - A single die is rolled once. What are the odds against rolling a prime ...

pre algebra - Two 6-sided dice are rolled. Find the odds of rolling s sum that ...

Probability - A number cube, numbered 1 through 6, is rolled once. What is the ...

Math - Two dice are rolled. Find the probability that an even number is rolled ...

Math - Two dice are rolled. Find the probability that a multiple of three is ...

math - A standard die is rolled three times. What is the probability that a ...

math 157 - Consider the experiment involving rolling a single die once. What is ...

Pre-Algebra - These are 2 problems that I'm stuck on; I know the answers to them...

math - If a dice is rolled 3 times, what is the probability of rolling a prime ...

math - a number cube numbered 1 through 6 is rolled.what is the probabilty of ...