What is the probability of picking a red ball out?

5) The probability of picking a red ball is 4/10 and the probability of picking a green ball is 3/10 and because the ball is put back in the box, the second green is also 3/10. So the probability is: Fig.5 Probability without replacement second ball out.

What is the probability that the first ball is the same?

The probability that the first ball is different from either number we have guessed is 4/6; the probability that the second ball is then equal to one of the numbers we have guessed is then 2/5, since 2 of the remaining 5 balls agree with the numbers we have guessed.

What is the probability of having at least one 6s?

So the total number of outcomes with exactly four “6”s is 1. Adding all together, there are 500 + 150 + 20 + 1 = 671 possible outcomes with at least one “6” showing. Since the number of all possible outcomes is 6 4 = 1296, the probability to role at least one 6 is then 671/1296.

What is the probability of drawing all 3 red cards?

The probability of drawing all 3 red cards can be found by multiplying their probabilities together. This gives 3/7 x 2/6 x 1/5 = 6/210 or 3\% Powered by Create your own unique website with customizable templates.

Can the same number be used twice for the same sum?

Replacement does indeed mean that the same one cannot be used twice. Order is not important, so we are using combinations in this case. Out of $_8 C_2 = 28$ possible sums, only 4 (7 + 0, 6 + 1, 5 + 2, 4 + 3) will yield 7.

What is the probability of drawing the first ball in blackjack?

The probability of drawing the first ball is 3/7 but after that there are only 2 red cards and 6 cards in total. The probability of drawing the 2nd card is 2/6 but after that there is only 1 red card and 5 cards in total. The probability of drawing the 3rd card is 1/5.

How do you respond to the probability line above?

Choose an appropriate response from the probability line above for the following events: Some of the events might fall between the probabilities e.g. very unlikely or almost certain. Some responses might depend your own circumstances. For example, find the probability of obtaining Heads from a coin flip.