Challenge Prelims V1.0 – Day 57 – CSAT Paper

Challenge Prelims V1.0-07

Subject: CSAT

Topics: Permutations and Combinations

Instructions:
This section is designed to help you prepare for the upcoming Prelims Exam. Here are some details about the quiz:

– The quiz consists of 5 practice questions based on specified topics.
– Each question carries 2.5 marks.
– There is no negative marking for incorrect answers.
– This quiz is purely for practice purposes.

Your participation in this quiz can significantly boost your score in the Prelims Exam.

Best of luck! Let’s get started.


1. There are five persons P, Q, R, S and T each one of whom has to be assigned one task. Neither P nor Q can be assigned Task-1. Task-2 must to be assigned to either R or S. In how many ways can the assignment be done?

 
 
 
 

2. Find total number of 3 digit numbers where exactly one digit is 6.

 
 
 
 

3. The total ways in which the letters of word ‘DISCOVER’ can be arranged in which all vowels are always together is

 
 
 
 

4. Each person’s performance compared with all other persons is to be done to rank them subjectively. How many comparisons are needed in total, if there are 11 persons?

 
 
 
 

5. A question paper had 10 questions. Each questions could only be answered as True or False. Each candidate answered all the questions. How many different sequences of answers are possible?

 
 
 
 

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