Question

Find the multiplicative inverse of -2 in mod 7​

Answer 1

Answer:

1. So something mod 7 is -2
2. Lets consider what mod does as a commands: If you have 7 and then mod it by 2 ie 7%2 you get 1
3. Essentially mod is seeing how many times a # goes into the other number and finding the remainder.
4. In this case we want the remainder of 2: -8%3 =-2
5. note there is also a mathematical procedural way to solve this.
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