To find the probability find the total number of ways to get the described event (rolling an even number: 2,4,6,8,10 for a total of 5) divided by the total number of outcomes (10). Thus the answer is:

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Remember to reduce the fraction!

To find the probability of an event, find the total number of ways the event can happen and divide that by the total number of outcomes. There are only  face-card diamonds (King, Queen, Jack), and there are 52 possible cards to draw. Thus:

The total number of gum drops and gummy bears is 49.  There are 7 red gum drops and gummy bears and 7 green gum drops and gummy bears.  There is a 2 in 7 probability that you will pick up a green or red gum drop or gummy bear.

If you answered 1/7, then you only accounted for choosing either red gum drop or gummy bear or green ones. 

If you answered 2/47 then you did not add the number of gum drops and gummy bears correctly.

If you answered 7 in 14 then you found the number of red or green gummy bears/gum drops out of the total red and green gummy bears and gum drops. 

And if you answered 3 out of 49, you found only the probability of choosing either red gum drops or green gummy bears. 

To find the probability of an event, find the number of ways that even can happen divided by the total number of possible outcomes.

There are 31 days in August, thus the total number of outcomes for someone being born in August is 31.

Since we only care about the event that is being born on the 17th, there is only one way that event can happen (being born on August 17th).

Thus the probability is 

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To find the probability of an outcome, find the total number of ways that event can happen divided by the total number of possible outcomes.

There are 52 cards in a deck of cards, so there are 52 total possible outcomes. Of those, there are 26 black cards, and 4 twos.

However, of those 4 twos, two have already been included when we counted the 26 black cards (the 2 of clubs and 2 of spades), thus there are only two additional twos to add to our total of 26 black cards.

This yields 28 possibilities, which when divided by 52 reduces to:

To find the probability of an event, determine the number of ways the event can happen, and divide that by the total number of possible outcomes.

Because there are 52 cards in a deck of cards, the total possible number of outcomes is 52.

Since there are 3 face cards (Jack, Queen, King) and four suits, there are a total of 12 face cards.

To find the probability of an outcome figure out the number of ways the specified event can occur (rolling a number greater than ), divided by the total number of outcomes. Since there are  possible numbers to roll, the total number of outcomes is . The numbers greater than  are:  for a total of  possibilities. Thus the answer is:

.
(Note,  is not included in "greater than", if it said "greater than or equal to " it would be).

To find the probability of an event, find out how many ways that specific event can happen and divide it by the total number of possible outcomes. The only numbers less than or equal to  on a  sided die are  and . There are  possible outcomes. Thus the reduced fraction is: 

Even though I and II may seem like rarer outcomes, all of the answer choices have an equal probability of occurring, as the probability for each outcome is 0.50 in each flip and the probability for each of these sequences of coin flips equals (0.50)^7.

 are the prime numbers on a die, so since there are 6 sides the odds would be .