Grade 8 | Probability Quiz 1

Question type:  Assertion and Reasoning

Directions: Choose the correct option
1.   A: Probability of any event occurring cannot be 6/5.
      R: Probability cannot be represented by a number less than 0.

2.  A: There is a 65% chance that the temperatures will rise to 55°C tomorrow.
     R: So, there is a 32% chance for the temperatures to be the same and a 3% chance of precipitation.

3.  A: -3/4 is possible probability for a meteor to strike earth.
     R: Because a meteor will never hit the earth.

4.   A: In a deck of 52 cards, the probability of picking a face card from all the red cards and picking a face card from all the black cards is the same.
      R: There are 42 number cards in the deck.

5. A: There is always a 50% chance for an event to occur and also not to occur
    R: The probability of an event occurring and not occurring sums up to 1.

Question type:  MCQ

Directions: Choose the correct option
6.  The probability of getting a jack from a pack of well-shuffled 52 playing cards is:

7. The probability of getting a heads or a tail when a coin is tossed is

8.  A box contains 6 rubies, 5 topaz, 4 sapphires and 5 emeralds of the same size. Heera takes out a gemstone from the box at random. What is the probability of it being a ruby?

9. What is the probability of choosing a consonant from the alphabet?

10. What are the total number of outcomes (sample space) when 8 coins are tossed at the simultaneously?