Probability exercise

2

How many possible outcomes are there when flipping a fair coin?

38

If exactly four of the first 5 cards dealt are spades, how many non-spade cards are left?

3

If exactly three of the first 5 cards dealt are spades, the probability that the next card will be a spade is (13 - __) / (52 - 5)

(13-3)/(52-5) = ¹⁰/₄₇

If exactly three of the first 5 cards dealt are spades, the probability that the next card will be a spade is :

⁴/₈ or ½

Three unbiased coins are tossed. What is the probability of getting at most two heads?

⁴/₃₆ or ¹/₉

Two dice are rolled, what is the probability that the sum of the two numbers equals 5 ?

⁹/₃₆ or ¼

Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even ?

²/₈ or ¼

We consider families of three siblings, what is the probability to have 3 children of same gender ?

⁶/₁₅ or ²/₅

What is the probability of choosing a green marble from a jar containing 5 red, 6 green and 4 blue marbles?

⁸/₅₂ or ²/₁₃

What is the probability of choosing a jack or a queen from a standard deck of 52 playing cards

⁴/₅₂ or ¹/₁₃

What is the probability of choosing a king from a standard deck of playing cards

¹²/₅₂ or ³/₁₃

What is the probability of choosing a queen, a king or an ace from a standard deck of playing cards

³/₁₂ or ¹/₄

What is the probability of choosing the letter a from the word mathematical?

²/₁₁

What is the probability of choosing the letter i from the word probability?

0

What is the probability of getting a 7 after rolling a single die numbered 1 to 6?

⁴/₇

What is the probability of landing on an odd number after spinning a spinner with 7 equal sectors numbered 1 through 7?

¹/₆

What is the probability of rolling a 1 on a six sided dice?

²/₆ or ¹/₃

What is the probability of rolling a 1 or a 6 on a 6 sided dice?

³/₆ or ½

What is the probability of rolling an even number on a 6 sided dice?