# CA 2 Exam Revison: Question Preview (ID: 17762)

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**A class has 10 boys and 12 girls, if one is picked randomly, what is the probability it's a boy?**

a) 45.45%

b) 54.54%

c) 50%

d) 10%

**Rolling a dice, what is the probability of rolling a 3?**

a) 20%

b) 16.6%

c) 33.33%

d) 50%

**Find the mean of the following numbers, 1, 2, 4, 8, 10, 2, 5, 6, 3, 2.**

a) 3.4

b) 3.9

c) 4.7

d) 4.3

**Find the mode of the following numbers, 1, 2, 4, 8, 10, 2, 5, 6, 3, 2.**

a) 10

b) 2

c) 1

d) 3

**Find the median of the following numbers, 1, 2, 4, 8, 10, 2, 5, 6, 3, 2.**

a) 3.5

b) 2

c) 3

d) 4

**Rooms listed from 1-10, what is the probability of getting a prime number room?**

a) 30%

b) 20%

c) 40%

d) 50%

**Rooms listed from 1-10, what is the probability of getting a even number room?**

a) 50%

b) 40%

c) 30%

d) 20%

**Rooms listed from 1-10, what is the probability of getting an odd number room?**

a) 10%

b) 15%

c) 80%

d) 50%

**Rooms listed from 1-10, what is the probability of getting a even above 6 number room?**

a) 10%

b) 20%

c) 30%

d) 40%

**Rooms listed from 1-10, what is the probability of getting an odd less than 6 number room?**

a) 70%

b) 20%

c) 30%

d) 100%

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