Spinner Y is fair: its three colours have equal angles. Spinner X has the angles shown. On which spinner is red more likely, and what is the probability of red there?

Question

Accepted Answer

X, 5/12. On X red covers 150^°: P = 150/360 = 5/12 . On Y red covers 120^°: P = 1/3 = 4/12 . Red is more likely on X. Counting colours (1 of 3) ignores the angles.

Spinner Y is fair: its three colours have equal angles. Spinner X has the angles shown. On which spinner is red more likely, and what is the probability of red there?

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