The eleven n Exercise 2 - 5, each of the numbers 5 -15 is written on a sheet of

Question

The eleven n Exercise 2 - 5, each of the numbers 5 -15 is written on a sheet of paper. sheets of paper are placed in a small wicker basket. If one sheet of paper is selecte random from the basket, find the probability that the number selected is 2. less than 10. 3. even. 4. odd or greater than 8. 5. even and greater than 8 In Exercises 6-9, if two of the same eleven sheets of paper mentioned in the above exercises are selected from the basket, without replacement, find the probability that 6. both numbers are less than 10. 7. both numbers are odd. 8. the first number is even and the second number is greater than 10. 9. neither number is odd.

Explanation / Answer

2. 5,6,7,8,9 are less than 5, so probability that a randomly selected number will be less than 10 will be 5/11

3. 6,8,10,12,14 are even numbers,so probability that a randomly selected number will be even will be 5/11

4. 5,7,9,11,13,15 are odd numbers, 9 to 15 (7 numbers) are greater than 8. A randomly selected number can be any one of 5,7,9,10,11,12,13,14,15. so probability that a randomly selected number is odd or greater than 8 will be 9/11

5. 6,8,10,12,14 are even numbers, 9 to 15 (7 numbers) are greater than 8. A randomly selected number can be any one of 6,8,9,10,11,12,13,14,15. so probability that a randomly selected number is even or greater than 8 will be 9/11

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