The Multiplication Rules

**jickjoker** · February 15th 2011, 11:41 AM

hi can anyone help

A die is rolled five times. What is the probability of getting 5 twos?

**Plato** · February 15th 2011, 11:46 AM

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 $\left(\dfrac{1}{6}\right)^2$ .

**jickjoker** · February 15th 2011, 11:52 AM

6*6*6*6*6=1 in 7776

the book im reading says the answer is 1 in 32 ?
probabilty demystified by bluman

**Plato** · February 15th 2011, 11:55 AM

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.

**Soroban** · February 15th 2011, 02:57 PM

Hello, jickjoker!

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.

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

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