# The Multiplication Rules

• February 15th 2011, 12:41 PM
jickjoker
The Multiplication Rules

hi can anyone help

A die is rolled five times. What is the probability of getting 5 twos?
• February 15th 2011, 12:46 PM
Plato
Quote:

Originally Posted by jickjoker
A die is rolled five times. What is the probability of getting 5 twos?

Well the probability of getting two fives in two rolls is $\left(\dfrac{1}{6}\right)^2$.
• February 15th 2011, 12:52 PM
jickjoker
6*6*6*6*6=1 in 7776

the book im reading says the answer is 1 in 32 ?
probabilty demystified by bluman
• February 15th 2011, 12:55 PM
Plato
Quote:

Originally Posted by jickjoker
A die is rolled five times. What is the probability of getting 5 twos?[/LEFT]

The answer to that question is $\left(\dfrac{1}{6}\right)^5$.
I don't care what the book says.
• February 15th 2011, 03:57 PM
Soroban
Hello, jickjoker!

Quote:

The book im reading says the answer is 1 in 32.

Maybe you're looking at the wrong answer?

If that is indeed the book's answer, throw away that book!

Their answer is for a different problem.

. . $\boxed{\begin{array}{c}\text{A coin is tossed 5 times.} \\
\text{What is the probability of getting 5 Heads?} \end{array}}$