Answer:
60%
a. 80%
b. 70%
Explanation:
In this case we are first asked for the probability that when drawing a ball at random it is 8, 9 and 4 white balls numbered 3, 6, 7, 10, that is 6 balls. We know that there are a total of 10 balls since they are 6 red and 4 white, 6 + 4 = 10.
Therefore the probability is:
6/10 = 0.6
that is to say that the probability that it is one of these balls is 60%
to. that is red or odd,
red are 1, 2, 4, 5, 8, 9 and in addition to that, in white there is one with 3 and with 7 that are odd, making them 8 balls, therefore:
8/10 = 0.8
In other words, the probability is 80%
b. white or even,
the white ones are 3, 6, 7, 10 and in the red ones the 2, 4 and 8 are even, that is to say that they are 7 balls, which means that:
the probability is:
7/10 = 0.7
The probability is 70%