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15-01-2018
Mathematics

contestada

on a spinner:
p (3)= 1/6 and the p (4) = 2/5
what is the probability of getting a 3 or 4

Respuesta :

15-01-2018

For this you use the OR rule (which means you add both of the probabilities) :
1/3 + 2/5

Make common denominators:
5/15 + 6/15

Add them:

= 11/15

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