3. Two mark example problems

1. A bag contains \(5\) blue balls and \(4\) green balls. A ball is drawn at random from the bag. Find the probability that the ball drawn is (i) blue (ii) not blue.

 

Answer:

 

The probability that the ball drawn is blue \(=\) $\frac{i}{i}$

 

The probability that the ball drawn is not blue \(=\) $\frac{i}{i}$

 

2. Two coins are tossed together. What is the probability of getting different faces on the coins?

 

Answer:

 

The probability of getting different faces on the coins \(=\) $\frac{i}{i}$

 

3. What is the probability that a leap year selected at random will contain \(53\) saturdays? (Hint: \(366 = 52 \times 7 + 2\))

 

Answer:

 

The probability that a leap year selected at random will contain \(53\) saturdays is $\frac{i}{i}$.

 

4. A die is rolled and a coin is tossed simultaneously. Find the probability that the die shows an odd number and the coin shows a head.

 

Answer:

 

The probability the die shows an odd number and the coin shows a head is $\frac{i}{i}$.

 

[Note: Enter numerator and denominator in simplified form.]