Asked by Katie
tossing a coin tails up or rolling a number less than 4 on a number cube.
I got 1/2 + 3/6 and got 1.
The answer is 3/4. I don't understand what to do. Please help.
Answers
Answered by
Steve
clearly the answer cannot be 1, since that would mean you always get tails or roll less than 4.
there are 12 possible outcomes, easy to list them.
1/2 give tails
1/2 * 3/6 = 1/4 gives heads and n<4.
1/2 + 1/4 = 3/4
or, consider P(heads & n>=4) = 1/2 * 1/2 = 1/4
you want 1 minus that, or 3/4.
there are 12 possible outcomes, easy to list them.
1/2 give tails
1/2 * 3/6 = 1/4 gives heads and n<4.
1/2 + 1/4 = 3/4
or, consider P(heads & n>=4) = 1/2 * 1/2 = 1/4
you want 1 minus that, or 3/4.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.