Homework Help: math

Posted by Mctagger on Tuesday, June 14, 2011 at 11:53am.

Which two is true as i'm confused

A) 3+7 ЃЯ 10 mod 15
17 + 9 ЃЯ 4 mod 21
12 + 14 ЃЯ 0 mod 26
B) 4+11 ЃЯ 2 mod 13
9+7 ЃЯ 4 mod 12
13 + 13 ЃЯ 1 mod 25
C) 5+9 ЃЯ 4 mod 10
16 + 13 ЃЯ 3 mod 26
12 + 7 ЃЯ 6 mod 14
d)2+7 ЃЯ 9 mod 15
15 + 15 ЃЯ 6 mod 22
8+5 ЃЯ 2 mod 10
e)7+11 ЃЯ 1 mod 18
6+13 ЃЯ 9 mod 26
4+20 ЃЯ 2 mod 22
F )13 + 19 ЃЯ 6 mod 26
6+12 ЃЯ 4 mod 14
17+ 10 ЃЯ 9 mod 18

math - MathMate, Tuesday, June 14, 2011 at 1:27pm
A)
3+7 ≡ 10 mod 15
3+7=10, 10÷15=0 remainder 10:TRUE.

17 + 9 ≡ 4 mod 21
17+9=26; 26÷21 Remainder=5: FALSE

12 + 14 ≡ 0 mod 26
12+14=26; 26÷26=1 remainder 0:TRUE

You can attempt the rest, and post your answers for checking if you wish.

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