If a random integer from 1 to 3 is chosen, what is P(1 or 2)?

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Multiple Choice

If a random integer from 1 to 3 is chosen, what is P(1 or 2)?

Explanation:
When you pick a random integer from 1 to 3, there are three equally likely outcomes: 1, 2, or 3. The event "1 or 2" includes two of these outcomes. So the probability is the number of favorable outcomes divided by the total number of outcomes: 2 out of 3, or 2/3. The chance of getting 3 alone would be 1/3, and it's not always true, so 1 is not correct. Thus the probability is 2/3.

When you pick a random integer from 1 to 3, there are three equally likely outcomes: 1, 2, or 3. The event "1 or 2" includes two of these outcomes. So the probability is the number of favorable outcomes divided by the total number of outcomes: 2 out of 3, or 2/3. The chance of getting 3 alone would be 1/3, and it's not always true, so 1 is not correct. Thus the probability is 2/3.

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