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QuizMultiple Choice

Probability of Compound Events

Question 1 • Pre-Algebra B

Two spinners that have sections numbered 1 through 5 are spun at the same time. Then, the numbers are added together. What is the total number of possible sums?

Answer
A
9
B
10
C
18
D
25

Explanation

The smallest sum is 1 + 1 = 2, and the largest is 5 + 5 = 10. Every whole-number sum from 2 through 10 is possible, giving 10 − 2 + 1 = 9 possible sums. The correct choice is 9.

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