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Probability Question
Just bought "Probability Demystified" by Allan Bluman and I came across this problem on page 71.
A die is rolled five times. What is the probability of getting 5 twos? a. 1/8 b. 1/4 c. 1/6 d. 1/32 The answer, according to the key in the back of the book, is letter "d". Now I thought the probability of getting 1 two on a die is 1/6. The probability of getting 2 twos after rolling the die twice should be 1/36, correct? So if you rolled the dice five times, shouldn't the probability of getting ALL twos be 1/7776? What am I missing? [Please don't embarass me with any "you idiot" comments. I'm trying to understand this stuff, and I happen to have a very non-mathematical like brain.] |
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