Right, let's go.
Question 17: Evaluate 893+412(mod4).
Step 1: Add the numbers.
893+412=1305
Step 2: Find the remainder when 1305 is divided by 4.
To find the remainder when dividing by 4, we only need to consider the last two digits of the number.
1305(mod4)≡05(mod4)
5÷4=1witharemainderof1
So, 1305≡1(mod4).
The final