# Welcome to the Number Theory and Cryptography MCQs Page

Dive deep into the fascinating world of Number Theory and Cryptography with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Number Theory and Cryptography, a crucial aspect of Discrete Mathematics. In this section, you will encounter a diverse range of MCQs that cover various aspects of Number Theory and Cryptography, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Discrete Mathematics.

Check out the MCQs below to embark on an enriching journey through Number Theory and Cryptography. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Discrete Mathematics.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Number Theory and Cryptography. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

### Number Theory and Cryptography MCQs | Page 1 of 13

Q1.
The number of factors of prime numbers are ___________

a.

2

b.

3

Q2.
What is the number ‘ 1’?
Q3.
All prime numbers are odd.
Q4.
3 is the smallest prime number possible.
Q5.
How many prime numbers are there between 1 to 20?

a.

5

b.

6

c.

7

Q6.
There are finite number of prime numbers.
Q7.
Sum of two different prime number is a ____________
Q8.
Difference of two distinct prime numbers is?
Q9.
If a, b, c, d are distinct prime numbers with an as smallest prime then a * b * c * d is a ___________
Q10.
If a, b are two distinct prime number than a highest common factor of a, b is ___________

a.

2

b.

0

c.

1

d.

ab