1. Probability
True or False?

2. A
When you roll a fair six- sided dice, it is harder to roll a six than a four.

3. B
Scoring a total of three with two dice is twice as likely as scoring a total of two.

4. C
In a lottery, the six numbers 3, 12, 26, 37, 44, 45 are more likely to come up than the six numbers 1, 2, 3, 4, 5, 6.

5. D
When two coins are tossed there are three possible outcomes: two heads, one head, or no heads.
The probability of two heads is therefore

6. E
There are three outcomes in a football match: win, lose or draw.
The probability of winning, if the teams are equally matched, is therefore

7. F
In a ‘true or false’ quiz with ten questions, you are certain to get five right if you just guess. 

8. G
After tossing a coin and getting a head five times in a row, the next toss is more likely to be a tail than a head.

9. H
In a group of ten people the probability of two people being born on the same day of the week is 1.

10. I
My friend has four daughters. If she has another baby, it is more likely to be a girl than a boy.

11. J
The probability of getting exactly three heads when I toss a coin six times is ½.

12. K
There is an evens chance of it raining on any given day.

13. L
It is harder to score a double than any other combination of dice.

14. M
Coming into college I could be early, on time, or late. Therefore the probability of being late is 1/3.

15. N
The probability of there being an eclipse at noon tomorrow is zero.

16. O
If I play the national lottery, I have just as much chance of winning as anyone else.

17. We will discuss these in class, but if you really want the answers, check now by going to that page.
Colin