Question
A spinner has equal regions numbered 1 through 21. What is the probability that the spinner will stop on an even number or a multiple of 3? (Points : 5)
Answers
PsyDAG
Even numbers are 2, 4, 6, 8, 10, 12, 14, 16, 18, 20.
P(even) = 10/21
Multiples of 3 are 3, <B>6,</B> 9, <B>12,</B> 15, <B>18</B>, 21.
Probability of either/or = sum of individual probabilities - common probabilities.
P(even) = 10/21
Multiples of 3 are 3, <B>6,</B> 9, <B>12,</B> 15, <B>18</B>, 21.
Probability of either/or = sum of individual probabilities - common probabilities.