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Question
a fair die is a cube with number 1 through 6 on the sides, represented as painted spots. if a fair die is rolled, what is the probability of number 6 landing face up?
with a fair die, the probability of rolling any number 1 through 6 is the same.
if ( p(1) ) represents the probability of rolling a 1,
( p(2) ) the probability of rolling a 2, and so forth,
what is the value of: ( p(1)+p(2)+p(3)+p(4)+
p(5)+p(6)? )
Step1: Recall the probability formula
The probability formula is \(P(A)=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}\). For a fair die, the total number of outcomes when rolled is \(n = 6\) (the numbers \(1,2,3,4,5,6\)).
Step2: Calculate each \(P(i)\)
For \(P(1)\), the number of favorable outcomes (rolling a \(1\)) is \(m_1=1\). So \(P(1)=\frac{1}{6}\). Similarly, \(P(2)=\frac{1}{6}\), \(P(3)=\frac{1}{6}\), \(P(4)=\frac{1}{6}\), \(P(5)=\frac{1}{6}\), and \(P(6)=\frac{1}{6}\).
Step3: Sum up the probabilities
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