Probability Multiple Choice Quiz Questions

1. A lolly bag contains 2 red, 3 green and 2 blue gum balls. What is the probability of selecting a green one?

2/7

5/7

4/7

3/7

The probability of selecting a green gum ball can be calculated by dividing the number of green gum balls (3) by the total number of gum balls in the lolly bag (2 red + 3 green + 2 blue = 7). Therefore, the probability of selecting a green gum ball is 3/7.

Explanation

The probability of selecting a green gum ball can be calculated by dividing the number of green gum balls (3) by the total number of gum balls in the lolly bag (2 red + 3 green + 2 blue = 7). Therefore, the probability of selecting a green gum ball is 3/7.

2. If you flipped a coin, what is the probability it will land on heads?

0/2

1/4

3/4

1/2

The probability of flipping a coin and it landing on heads is 1/2. This is because there are two possible outcomes when flipping a coin, heads or tails, and they are equally likely. Therefore, the probability of landing on heads is 1 out of 2, or 1/2.

Explanation

The probability of flipping a coin and it landing on heads is 1/2. This is because there are two possible outcomes when flipping a coin, heads or tails, and they are equally likely. Therefore, the probability of landing on heads is 1 out of 2, or 1/2.

3. If you rolled a 6-sided dice, what is the probability of rolling a even number?

2/6

3/6

4/6

5/6

A standard 6-sided die has the numbers: 1, 2, 3, 4, 5, and 6. The even numbers among these are 2, 4, and 6 — that's 3 outcomes.

So, the probability of rolling an even number is:

Number of favorable outcomes ÷ Total outcomes = 3 ÷ 6 = 3/6

This can also be simplified to 1/2, but 3/6 is the correct choice from the given options.

Explanation

A standard 6-sided die has the numbers: 1, 2, 3, 4, 5, and 6. The even numbers among these are 2, 4, and 6 — that's 3 outcomes.

So, the probability of rolling an even number is:

Number of favorable outcomes ÷ Total outcomes = 3 ÷ 6 = 3/6

This can also be simplified to 1/2, but 3/6 is the correct choice from the given options.

4. There are red, yellow and green lollipops in a bag. What is the probability of selecting a blue one?

1/4

1

0/3

2/3

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Explanation

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5. If you rolled a 6-sided dice, what is the probability of rolling a 3?

1/6

2/3

3/6

5/6

The probability of rolling a 3 on a 6-sided dice is 1 out of 6 because there is only one face on the dice with the number 3, and there are a total of six possible outcomes when rolling the dice. Therefore, the chances of rolling a 3 are 1 out of 6 or 1/6.

Explanation

The probability of rolling a 3 on a 6-sided dice is 1 out of 6 because there is only one face on the dice with the number 3, and there are a total of six possible outcomes when rolling the dice. Therefore, the chances of rolling a 3 are 1 out of 6 or 1/6.

6. What is the probability of selecting the diamond suit from a deck of playing cards?

1/4

2/4

3/4

0/4

In a standard deck of playing cards, there are 52 cards in total, and 13 of them are diamonds (since there are 13 cards in each suit).

To find the probability of selecting a diamond suit, divide the number of diamond cards by the total number of cards:

Probability = Number of diamond cards / Total number of cards Probability = 13 / 52 Probability = 1/4

So, the probability of selecting a diamond suit from a deck of playing cards is 1/4 or 0.25.

Explanation

In a standard deck of playing cards, there are 52 cards in total, and 13 of them are diamonds (since there are 13 cards in each suit).

To find the probability of selecting a diamond suit, divide the number of diamond cards by the total number of cards:

Probability = Number of diamond cards / Total number of cards Probability = 13 / 52 Probability = 1/4

So, the probability of selecting a diamond suit from a deck of playing cards is 1/4 or 0.25.

7. A card is selected from a deck of playing cards. What is the probability of selecting a red card?

1/4

3/4

0/2

1/2

The probability of selecting a red card from a deck of playing cards is 1/2. This is because there are 26 red cards (13 hearts and 13 diamonds) out of a total of 52 cards in a deck. So the probability is calculated by dividing the number of favorable outcomes (red cards) by the total number of possible outcomes (all cards in the deck), which gives us 26/52 or 1/2.

Explanation

The probability of selecting a red card from a deck of playing cards is 1/2. This is because there are 26 red cards (13 hearts and 13 diamonds) out of a total of 52 cards in a deck. So the probability is calculated by dividing the number of favorable outcomes (red cards) by the total number of possible outcomes (all cards in the deck), which gives us 26/52 or 1/2.

8. If you flipped 2 coins, what is the probability that both will land on tails?

2/4

3/4

1/4

0/4

When flipping a coin, there are two possible outcomes: heads (H) or tails (T). For two coins, the possible outcomes are:

HH (heads, heads)

HT (heads, tails)

TH (tails, heads)

TT (tails, tails)

There are 4 possible outcomes in total. Only one of these outcomes is "both tails" (TT). Therefore, the probability of both coins landing on tails is the number of favorable outcomes (TT) divided by the total number of possible outcomes (4).

Explanation

When flipping a coin, there are two possible outcomes: heads (H) or tails (T). For two coins, the possible outcomes are:

HH (heads, heads)

HT (heads, tails)

TH (tails, heads)

TT (tails, tails)

There are 4 possible outcomes in total. Only one of these outcomes is "both tails" (TT). Therefore, the probability of both coins landing on tails is the number of favorable outcomes (TT) divided by the total number of possible outcomes (4).

9. What is the probability of paper losing to scissors?

0/3

1/3

2/3

1

Explanation

10. What is the probability of rock beating paper?

0/3

1/3

2/3

0

In rock-paper-scissors, rock loses to paper. Therefore, the probability of rock beating paper is zero, as it is not possible for rock to beat paper according to the rules of the game.

Explanation

In rock-paper-scissors, rock loses to paper. Therefore, the probability of rock beating paper is zero, as it is not possible for rock to beat paper according to the rules of the game.