Probability Question Set 2

Probability Question Set 2

Hello Readers,

Probability questions are asked in almost all competitive exams. They are followed by simple tricks and calculations, and cover about 2-3% of the paper marks. Here is a sample paper sheet of the Probability based questions for your practice. Do give us a review.

Q1. In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that only girls or only boys get selected is: 
(a) 1/3
(b) 2/5
(c) 1/4
(d) 1/5
(e) 3/5

Q2. A number is selected at random from the first 35 natural numbers. What is the probability that it is either a multiple of 5 or a multiple of 7?  
(a) 14/35
(b) 11/35
(c) 12/35
(d) 17/35
(e) 23/35

Q3. There are four hotels in a town. If three men check into the hotels in a day then what is the probability that all of them do not check into the same hotel?
(a) 15/16
(b) 63/64
(c) 3/64
(d) 1/16
(e) 17/64

Q4. Two letters are chosen out of the alphabets of the English language. Find the probability that both the letters are vowels. 
(a) 2/65
(b) 3/65
(c) 1/65
(d) 3/5
(e) 0.2

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Q5. A coin is tossed successively three times. Find the probability of getting exactly one head or two head: 
(a) 1/2
(b) 3/4
(c) 2/3
(d) 1/4
(e) 3/8

Answers: