7. A box contains paper slips of 10 even numbers and 15 odd numbers. Another box
contains 20 even numbers and 25 odd numbers. If we take a slip from each box (3)
a) What is the probability of being both slips odd
b) What is the probability of being at least one even
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Step-by-step explanation:
Number of white balls in the first box = 4
Number of black balls in the first box = 6
Number of white balls in the second box = 3
Number of black balls in the second box = 5
Total number of balls in the first box = 10
Total number of balls in the second box = 8
Probability of getting a black ball from the first box =
=
Probability of getting a black ball from the second box =
=
0.625 > 0.6
∴ Probability of getting a black ball from the first box, i.e., 0.625 > Probability of getting a black ball from the second box, i.e., 0.6
Therefore, the second box is a better choice for getting a black ball.
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