Understanding Modular Arithmetic

What is the primary reason for learning modular arithmetic in cryptography?

• It helps in understanding number theory.

• It is used in all mathematical fields.

• It simplifies complex calculations.

• It is a fundamental component of cryptography.

In mod 2, which of the following pairs of numbers are congruent?

• 1 and 3

• 0 and 2

• 3 and 5

• 2 and 4

How does the number line repeat in mod 2?

• 0, 1, 2, 0, 1, 2

• 0, 1, 0, 1, 0, 1

• 1, 0, 1, 0, 1, 0

• 1, 2, 0, 1, 2, 0

In mod 3, what is the congruence of the number 4?

• 0

• 1

• 2

• 3

Which statement is true about numbers 3 and 5 in mod 3?

• Both are congruent to 0.

• Both are congruent to 1.

• 3 is congruent to 0, and 5 is congruent to 2.

• 3 is congruent to 2, and 5 is congruent to 0.