Answer:
900
Step-by-step explanation:
(n-2)*180
5*180=900
The answer is C, because to find IQR you have to find the difference (subtract) of the first and third quartile
42 + 28 + 12 + 18 = 100 total beads
probability of not drawing a yellow or a green : (12 + 18) / 100 = 30/100 reduces to 3/10 or 30%
probability of drawing a red or green : (18 + 28) / 100 = 46/100 reduces to
23/50 or 46%