Daniel flips 2 coins. Find the probability of the coins both coming up heads.
I think 2/4 or 1/2
Serena has a bag filled with 10 breakfast bars. She knows that 1 of them is her favorite. Find the probability that she will select her favorite bar by reaching into the bag without looking.
I think 1/10
four possibilities
h h
h t
t h
t t
only ONE of the four is two heads
so
1/4 NOT 1/2
yes 1/10 for the breakfast bars
strange, most of your problems are easy but the two coins was a level higher
was the second question correct?
yes. 1/10 for breakfast bars
Thank you SO much for all of your help. I am sure all the questions you have to answer for all of us in so many subjects can be very grueling. Just wished I had your smarts.
To calculate the probability of an event occurring, you need to divide the number of favorable outcomes by the total number of possible outcomes.
1. For the first question, Daniel flips 2 coins. Each coin has 2 possible outcomes: heads or tails. So, the total number of possible outcomes is 2 * 2 = 4. To find the probability of both coins coming up heads, there is only 1 favorable outcome (HH). Therefore, the probability is 1/4.
2. For the second question, Serena has a bag with 10 breakfast bars, and she knows that 1 of them is her favorite. The favorable outcome is selecting her favorite bar, which is only 1. The total number of possible outcomes is the number of breakfast bars in the bag, which is 10. So, the probability is 1/10.
Your answers are correct!