1. INTERNATIONAL UNIVERSITY OF BUSINESS AGRICULTURE AND TECHNOLOGY
Quiz examination
STA 240 Set: Z
Full marks: 100 Time: 50 minutes
1. What is the probability of choosing a consonant from the alphabet?
2. What is the probability of choosing a Tuesday from a month?
3. A single 6-sided die is rolled. What is the probability of rolling an odd number?
4. What is the sample space for choosing 1 letter at random from 5 vowels?
5. What is the sample space to choose 1 letter at random from the word SWEETHEART?
6. A single 6-sided die is rolled. What is the probability of rolling a number that is not 3?
7. A glass jar contains 10 red marbles. If a marble is chosen at random from the jar, what is
the probability that it is not red?
8. Two coins are tossed; find the probability that
a) At most one head is obtained.
b) At least one tail is obtained.
9. A jar contains 3 red marbles, 7 green marbles and 5 white marbles. If a marble is drawn
from the jar at random, what is the probability that
a) The marble is white?
b) The marble is either white or red?
10. There are 5 balls in a bag, 1 is red, 3 are yellow and 1 is blue. If a ball is drawn from the
bag at random, what is the probability that the ball is not blue?

2. Md. Mortuza Ahmmed