Challenge Prelims V1.0 – Day 4 – CSAT Paper

Challenge Prelims V1.0-04

Subject: CSAT

Topics: Number System

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. a, b and c are three distinct non-zero digits. Let S be the sum of all possible 2-digit numbers formed using a, b and c without repetition of digits. Then consider the following statements:

Statement 1: S is always divisible by 11

Statement 2: S is always an even number

Statement 3: The maximum possible value of S is 528

Statement 4: S could be a two digit number

How many of the above statements are correct?

 
 
 
 

2. The product of two natural number is a double digit prime number. The sum of the two numbers is a multiple of four. Then which of the following is a possible value for the difference between the two numbers?

 
 
 
 

3. Consider the following statements in respect to two natural numbers, p and q, such that p is odd and q is even.

Statement 1: p × q can be an even prime number.

Statement 2: p + q can be an even number.

Statement 3: p/q can be a natural number.

Which of the above given statements is/are correct?

 
 
 
 

4. Integers are listed from 600 to 900. How many numbers will be there such that it contains either 6 or 9 as a digit?

 
 
 
 

5. The sum of a two digit number ‘X’ and the number obtained by reversing its digits is 66. If the digits are distinct and non-zero, how many values of ‘X’ are possible?

 
 
 
 

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