Practice Questions on Probability
Aptitude Questions and Answers

Easy Probability Question - 11

Q11.

Two cards are drawn from a pack of well shuffled cards. Find the probability that one is a club and other in King.

A.

1/13

B.

4/13

C.

1/52

D.

1/26

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Easy Probability Question - 12

Q12.

The odds against an event are 5:3 and the odds in favour of another independent event are 7:5. Find the probability that at least one of the two events will occur.

A.

52/96

B.

69/96

C.

71/96

D.

13/96

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Easy Probability Question - 13

Q13.

A special lottery is to be held to select a student who will live in the only deluxe room in a hostel. There are 100 Year-III, 150 Year-II and 200 Year-I students who applied.

Each Year-III's name is placed in the lottery 3 times; each Year-II's name, 2 times and Year-I's name, 1 time. What is the probability that a Year-III's name will be chosen?

A.

1/8

B.

2/9

C.

2/7

D.

3/8

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Easy Probability Question - 14

Q14.

If the chance that a vessel arrives safely at a port is 9/10 then what is the chance that out of 5 vessels expected at least 4 will arrive safely?

A.

$\dfrac{14 × 9^4}{10^5}$

B.

$\dfrac{15 × 9^5}{10^4}$

C.

$\dfrac{14 × 9^3}{10^4}$

D.

$\dfrac{14 × 9^6}{10^5}$

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Easy Probability Question - 15

Q15.

In a charity show tickets numbered consecutively from 101 through 350 are placed in a box.

What is the probability that a ticket selected at random (blindly) will have a number with a hundredth digit of 2?

A.

0.285

B.

0.40

C.

100/249

D.

99/250

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