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A spinner is divided into many sections of equal size. Some sections are red, some are blue, and the remaining are green. The probability of the arrow landing on a section colored red is 9/20. The probability of the arrow landing on a section colored blue is 6/20. What is the probability of the arrow landing on a green-colored section

A15/20
B11/20
C6/20
D5/20

Verified Answer :

It would be D. 5/20 because the other 2 you would add then subtract and then you would just put the answer yo get from subtracting it over 20. 

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