QUANT QUIZ-12 BASED ON
PROBABILITY
1. Two persons A and B
appear in an interview for two vacancies. If the probabilities of their
selections are ¼ and 1/6 , respectively, then the probability that none of them
is selected, is;
a. 5/8
b. 5/12
c. 1/12
d. 1/24
e. none of these
Directions (2- 4): Study the
given information carefully and answer the questions that follow.
A basket contains 4 red, 5 blue
and 3 green marbles.
2. If two marbles are
drawn at random, what is the probability that both are red:
a. 3/7
b. ½
c. 2/11
d. 1/6
e. none of these
3. If three marbles are
picked at random, what is the probability that at least one is blue:
a. 7/12
b. 37/44
c. 5/12
d. 7/44
e. none of these
4. If three marbles are
picked at random, what is the probability that either all are green or all are
red:
a. 7/44
b. 7/12
c. 5/12
d. 1/44
e. none of these
5. What is the
probability that a card drawn at random from a pack of 52 cards is either a
king or a spade:
a. 17/52
b. 4/13
c. 3/13
d. 13/52
e. none of these
6. The probability of
getting a composite number when a six-faced unbiased die is tossed is:
a. ¼
b. 1/3
c. ½
d. 1
e. none of these
7. Two unbiased dice
are thrown simultaneously .The probability of getting the sum divisible by 3,
is:
a. 11/36
b. 12/36
c. 13/36
d. 17/36
e. none of these
8. The probability that
a leap year selected at random contains 53 Sundays , is:
a. 7/366
b. 26/183
c. 1/7
d.2/7
e. none of these
9. A number is chosen
at random from the first 100 natural numbers. Find the probability that the
number is odd or a multiple of 8:
a. 62/100
b. 47/100
c. 67/100
d. 43/100
e. none of these
10. Two dice are tossed
once .Find the probability of getting the sum of scores on the dice as 5.
a. 1/6
b. 1/35
c. 1/9
d. 1/8
e. none of these
ANSWERS
1.A, 2.D, 3.B, 4.D, 5.B, 6.B, 7.A, 8.D, 9.A, 10.C,
