WorksheetsModular Arithmetic Basic - Cryptography
Total questions: 10
Worksheet time: 20mins
Name
Class
Date
1.
For Modular Arithmetic what value is the most important?
a)
The Modulo
b)
The Given Number
c)
The Remainder
d)
The Divisor
2.
What is 7 mod 3?
a)
1 mod 3
b)
2 mod 3
c)
3 mod 3
d)
0 mod 3
3.
What is 57 mod 7?
a)
0 mod 7
b)
1 mod 7
c)
7 mod 7
d)
-1 mod 7
4.
What is 99 mod 100?
a)
99 mod 100
b)
100 mod 99
c)
1 mod 100
d)
100 mod 1
5.
What does 36 mod 13 look like using the Quotient Remainder Theorem?
a)
36 = 13 * 2 + 10
b)
36 = 10 * 3 + 6
c)
13 = 36 * 1 - 23
d)
6 = 36 - 10 * 3
6.
What does 13 mod 126 look like using the Quotient Remainder Theorem?
a)
13 = 126 * 0 + 13
b)
126 = 13 * 9 + 9
c)
13 = 126 * 0 + 13
d)
13 = 126 + 13
7.
What is 9 mod 2 - 10 mod 2 congruent to?
a)
0 mod 2
b)
1 mod 2
c)
-1 mod 2
d)
-2 mod 2
8.
What is 6 mod 9 + 11 mod 9 congruent to?
a)
8 mod 9
b)
6 mod 9
c)
7 mod 9
d)
0 mod 9
9.
what is (-5 mod 4) - (-3 mod 4) congruent to?
a)
2 mod 4
b)
1 mod 4
c)
-2 mod 4
d)
-1 mod 4
10.
What is 14 mod 8 - 15 mod 8 congruent to?
a)
7 mod 8
b)
1 mod 8
c)
0 mod 8
d)
6 mod 8
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