a box contains sweetes of different colours : orange, blue, red and yellow . Duncan is going to choose one sweet at random
from the box . The table shows each of the probabilities that Duncan will choose an orange sweet, a red sweet or a yellow sweet .
orange = 0.35 red = 0.24 yellow = 0.19
1) work out the probability that Duncan :
a) will choose a blue sweet
b) will not choose a red sweet
2) the box contains 250 sweets . estimate how many red sweets are in the box