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Sagot :

Answer:

1. 28

Let's assume that for every 360 cars there will be 8 defective cars. With this, we can divide 1260 by 360. Next, we will multiply the quotient with 8 which is the number of defective cars for every 360 cars. Therefore, there will be 28 defective cars

2.21

If out of 320 cars, there are 12 cars have defects. That means there are, 320 - 12 = 308 cars that do not have defects out of 320 cars. If there are 308 cars that do not have defects out of 320 cars. We can set the following equation to calculate the number of cars that will not have defects out of 560 cars

3.From 1 to 20 (inclusive) there are 10 even numbers, so the probability of picking an even number is 10/20, or 1/2.17