Modular arithmetic is a branch of Mathematics use to predict the outcomes of cyclic events such as days of the week, market days, months of the year, time etc.
RULES OF MODULAR ARITHMETIC
The shorter hand of a clock points to 5 on a clock face. What number does it point to after 30 hours?
30 hours after = 11 o” clock.
2. Find the following numbers in their simplest form in modulo 4
Solution
15(mod4) = 15÷4
3 remainder 3, therefore 3 the remainder is taken as 3 mod 4
102mod4 = 102 ÷4 = 25 remainder 2
102 (mod 4) = 2 mod 4
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