Question

The inverse of 3 modulo 7 is?
a) -1
b) -2
c) -3
d) -4​

Answer 1

Answer:

(-4) is the correct answer

Step-by-step explanation:

hope it helps

Answer 2

Given:

$3$ modulo $7$

To find:

We need to find the inverse of $3$ a modulo $7$

Step-by-step explanation:

• Modulo operation refers to the process of finding out a remainder.
• We need to find the Euclidean algorithm by finding the highest common factor.

Solution:

$2*3+1=7$

Now,

$-2*3 + 1*7 = 1$

Therefore, $-2$ is an inverse of $3$ a modulo $7$