# Directions: Study the following bar chart carefully and answer the questions given beside.

### The bar chart below shows the total balls of three colours red, white and black, number of red balls and number of white balls, present in five different bags. ### 2 What is the difference of probability of drawing a black ball from bag A and probability of drawing a black ball from bag E? A 1/5                      B 2/3                  C 1/6                D 2/7      E 3/5

C

Number of black ball in bag A = 24 – (10 + 8) = 6

Number of black ball in bag E = 12 – (5 + 2) = 5

Diffarnce= 5/12-6/24=1/6

### 3 3 balls are drawn from bag D. What is the probability that all balls are of different colours? A 7/41           B 12/61           C 8/57            D 3/13         E 11/53

C

Number of black ball in bag D = 20 – (8 + 10) = 2

Probability= 8C1X10C1X2C1/20C3=8/57

### 4 If all balls from bag B is added in bag E and then black ball is withdrawn from bag E. Find the probability. A 4/15            B 1/5         C 7/13            D 4/9          E 3/11

Correct Option: A
Number of black ball in bag B = 18 – (9 + 6) = 3

Number of black ball in bag E = 12 – (5 + 2) = 5

Number of black ball in bag E after addition = 3 + 5 = 8

Total number of balls in bag E after addition = 18 + 12 = 30

Probability= 8/30 =4/15

## 5 2 balls are drawn from C. What is the probability that both balls are white in colour? A 6/11               B 3/ 8          C 2/5              D 1/7           E 3/4

D

Number of black ball in bag C = 15 – (4 + 6) = 5

probability=6C2/15C2=1/7