Question

A single die is rolled. Find the probability of rolling an even number or a number less than 4

Answer 1

Rolling a die has 6 possible outcomes.
Getting an even number means getting a 2, 4, or 6. So 3 possibilities.
Probability of getting an even number is: 3/6 = 1/2

contd...

Answer 2

Number less than 4 means: 1, 2, and 3. 3 possibilities
Probability of getting a number less than 4 is: 3 / 6 = 1/2

These two events are not mutually exclusive because 2 occurs in both cases.
The probability of getting a 2 is: 1/6

P(A or B) = P(A) + P(B) - P(A and B)

Answer 3

P(A or B) = 1/2 + 1/2 - 1/6 = 5/6

Answer 4

WAY TO GO RANGA!!!! you explained it well :)

Answer 5

Thank you Victoria.

Answer 6

haha no problem

Answer 7

Wow. All that for simple answer. Sometimes I hate math. -_-