Question

Numbers 1 to 10 are written on 10 separate slips, kept in a box and mixed well. One slip is choosen from the box without looking into it. What is the probability of 1) getting a number greater than 7 2) getting a prime number 3) getting a number divisible by 3 ​

Answer 1

Answer:

1) 3/10

2) 4/10

3) 3/10

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Answer 2

1.) Numbers that are greater than 7 = 8,9,10 = 3

Total number of slips = 10

Therefore, probability =  3/10

2.) Prime numbers within 10 = 2,3,5,7 = 4

Total number of slips = 10

Therefore, probability =  4/10 = 2/5

3.) Numbers within 10 that are divisible by 3 = 3,6,9 = 3

Total number of slips = 10

Therefore, probability =  3/10

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