Probability

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Question

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Question 1 :

On a railway route between two places A and B, there are 20 stations on the way. If 4 new stations are to be added, how many types of new tickets will be required if each ticket is issued for a one way journey?

1. 14
2. 48
3. 96
4. 108
Answer
7017

Question 2 :

A,B,C and D are four towns any three of which are non-colinear. Then the number of ways to construct three roads each joining a pair of towns so that the roads do not form a triangle is

1. 7
2. 8
3. 9
4. More than 9
Answer
7018

Question 3 :

A number is selected from numbers 1 to 25. The probability that it is prime is

1. 4/5
2. 1/3
3. 1/6
4. 5/6
Answer
7019

Question 4 :

A bag contains lemon flavoured candies only. Malini takes out one candy without looking into the bag. What is the probability that she takes out a lemon flavoured candy?

1. 0
2. 1
3. 2
4. 3
Answer
7020

Question 5 :

What is the probability that a leap year has 52 Mondays?

1. 2/7
2. 5/7
3. 4/7
4. 6/7
Answer
7021