احتمال اور شماریات

What is the mean of the numbers 2, 4, 6, 8, 10?

• 1 5
• 2 6
• 3 30
• 4 7

What is the median of 3, 1, 4, 1, 5?

• 1 1
• 2 3
• 3 2.8
• 4 4

A bag has 3 red and 2 blue balls. Two balls are drawn without replacement. What is the probability that both are red?

• 1 3/5
• 2 9/25
• 3 1/5
• 4 3/10

Events A and B cannot happen together. P(A) = 0.3 and P(B) = 0.4. What is P(A or B)?

• 1 0.58
• 2 0.7
• 3 0.1
• 4 0.12

A fair coin is tossed 3 times. What is the probability of exactly one head?

• 1 1/8
• 2 1/2
• 3 1/4
• 4 3/8