Probability

Probability of drawing a seven of spades, from a 52 card deck, is 1/52.

With the information that is available from the question, it is impossible.

For any particular trial, the total probability is 1.

If you assume that birth dates are uniformly distributed over the year (they are not), and you ignore leap years, then the probability of two people selected at random, share a birthday is 1/365.

To calculate the number of zeros in a factorial number, we need to determine the number of factors of 5 in the factorial. In this case, we are looking at 10 to the power of 10 factorial. The number of factors of 5 in 10! is 2 (from 5 and 10). Therefore, the number of zeros in 10 to the power of 10 factorial would be 2.

Start with examples like flipping a coin, rolling a die or spinning a dreidel. Then explain in terms they understand. That depends very much on the age of the child.

The answer depends on where in the world you are. In some places, where hospital [or maternity unit] births are more popular, the medical staff prefer to deliver babies during weekdays so that they can have time with their own families at weekends. As a result, the distribution of births is not uniform across days of the week.

The probability of getting a heads on the first flip is 1/2.

Similarly, the probability on each subsequent flip is 1/2, since they are independent events.

The probability of several independent events happening together is the product of their individual probabilities.

2, there could only be two outcomes. Heads or tails

As in any experiment you need to define a valid toss. So if you are examining the number of heads and tails you would limit the outcomes to these two states. However, in a real world experiment there may be a condition where the coin landed on a uneven surface and was tilted in some way. The number of tilted ways is infinite. You could also have the coin land on its edge which is unlikely but possible.

Assuming a 52 card deck, 4 jacks / 52 cards or probability of 4/52 or 1/13 or 0.077.

1-digit number: 5 possibilities

2-digits number: 5 x 5 = 25 possibilities

So there are 30 numbers.

There are 12 face cards in a standard 52-card deck, a jack, a queen and a king of each of the four suits.

When there is at least one outcome in which both events occur simultaneously.

Event A: The next person to enter the mall is male

Event B: The next person to enter the mall is married

If a married man walks in next, then both events occur.

There are 36 possible outcomes when throwing 2 dices : 6 for the first dice (1,2,3,...6) and 6 for the second dice

Let say that in the sums below the first number is the result of the first dice and the second number is for the result of the second dice:

2 = 1 + 1: 1 possibility

4 = 2 + 2 = 1 + 3 = 3 + 1: 3 possibilities

6 = 1 + 5 = 5 + 1 = 2 + 4 = 4 + 2 = 3 +3: 5 possibilities

1 + 3 + 5 = 9 possibilities to get 2 or 4 or 6

So the probability to get a sum of 2 or 4 or 6 is 9/36=1/4

And the probabilty of NOT rolling a sum of 2 or 4 or 6 is 1-1/4=3/4

probablity in what? a dice? if its a dice, it is 2/6

We have that stupid packet for science as well and we had the same question

It means you have 100% chance or certain.

Assuming it is a normal fair cube, it is 1/6.

A perfect example of how theories are tested ! Theory predicts the outcome

of the experiment, and the purpose of the experiment is to test the theory.

If the outcome of the experiment is appreciably different from the one predicted

by the theory, (and if the experiment itself was valid), then the prediction is flawed,

and the theory must be either tweaked or trashed.

3/7

there is a 1 in 13 chance of picking a 2 in a deck of cards, then picking a king afterwards, its also a 1 in 13 chance, but together, theres a even slimmer chance.

top, opt, pot

four

Assuming that the die is fair rather than far, the probability is (5/6)9(1/6) = 1,953,125/60,466,176 = 0.0323 approx.