0
This is modulo arithmetic, also called clock arithmetic (even when the modulus is not 12) as the numbers start back at zero when the modulus is reached - the numbers go round and round in a cycle like the numbers (or times) on a clock.
When doing modulo arithmetic, only the reminder when the number is divided by the modulus is considered. For example 15 modulo 6 is 3 as 15 ÷ 6 = (2←ignored) remainder 3; 15 modulo 3 is 0 as 15 ÷ 3 = (5←ignored) remainder 0.
This is an important area of maths.
One application is finding the highest common factor of two numbers (which is Euclid's Algorithm or method):
- find the first number modulo the second
- replace the first number by the second number
- replace the second number by the number found in step 1
- if the (new) second number is not zero repeat from step 1
- the highest common factor is the (final) first number.
eg find the hcf of 84 and 30:
84 MOD 30 = 24
30 MOD 24 = 6
24 MOD 6 = 0
→ hcf(84, 30) = 6.
Another use is in the RSA public key encryption.
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In the case of the question, the modulus is 12:
(11 + 2) MOD 12 = 13 MOD 12 = 1
(9 + 5) MOD 12 = 14 MOD 12 = 2
Wiki User
∙ 7y ago
Wiki User
∙ 7y agoThis riddle uses time. Take a twelve hour clock.
11 o'clock + 2 more hours = 1 o'clock
9 o'clock + 5 more hours = 3 o'clock
It does not matter if the times are am or pm, because it is a 12 hour clock.
Wiki User
∙ 16y ago11 o'clock and 3 more hours = 2 o'clock!
Wiki User
∙ 11y ago20/3 or 6 and 2/3
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If two plus two equal fish then what does four plus four equal?
If you overlay a 2 with a backward 2, it looks like a fish swimming upward (moreso when turned sideways).As shown on the TV series called The Fairly Oddparents, a character wishes that he was always right. The wish is granted and when the teacher asks him what 2 + 2 is, he said "Fish" and everyone then believed that "fish" was the correct answer.There is one more possible way of looking at this. here's how it goes: 2+2=4, and there are four letters in the word "fish". Another example: 3+2= z e b r a. there are five letters in zebra.
Find the error its impossible 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20?
The errors are grammatical. The email came to me as follows: "Find the error, its impossible 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20" Error 1: "Find the error" is a sentence and should end with a period. Error 2: "its" is possessive but should be a contraction of "it is:" therefore, it should have an apostrophe. Error 3: "Since "it's impossible" is a sentence, "it's" should have the i capitalized. Error 4: "Since "It's impossible" is a sentence, it should have punctuation at its end. Suggestions are a period or colon. At least two more errors as 1) It's not impossible. 2) Since there are at least 3 and if including the two you included then 5, error is not singular but plural and should be "errors." (The original riddle from Facebook is explained in the related question below.) ***The "11" is BACKWARDS! Found the error. Boom!***
What is 3 7 chicken 2 3 cat and 1 2 goat Guess the city name?
Chicago.
One thing will come yearly once monthly twice weekly four times16 times in a day what is it?
' ODD ' numbers. '6' In a Day, there are 6 ODD hours.- take day hrs in 12hr format,not in a 24 hr format. (1),2,(3),4,(5),6,(7),8,(9),10,(11),12 - 1,3,5,7,9,11 are 6 odd numbers. '4' In a Week, ther are 4 ODD days. - you know that there are 7 days in a week. (1),2,(3),4,(5),6,(7) - 1,3,5,7 are 4 odd numbers. '2' In a Month, there are 2 ODD weeks. - you know that there are 4 weeks in a month. (1),2,(3),4 - 1 & 3 are 2 odd numbers. '1' In a Year (12 months), there is 1 ODD - you konw that 12 months are in year.take number 12 of months. (1),2 - 1 is 1 odd number
What does el coche mean?
It means: 1) A small to medium sized automobile that can carry no more than nine (9) passengers. 2) a horse drawn carriage that carries two or more passengers 3) a rail car or street car
What is 11 yards and 2 feet equal to?
There are 3 feet in one yard. Therefore, 11 yards 2 feet is equal to (11 x 3) + 2 = 35 feet.
What is the answer to -3-2-5-1?
-3-2-5-1 is equal to -11
What improper fraction is equal to 3 and 2 thirds?
11/3
What two numbers add up to equal 6 and multiply to equal -2?
4
If a is 3 what is 2a plus 5 equal to?
It is: (2*3)+5 = 11
Prime numbers equal to or less then 11?
2, 3, 5, 7 and 11.
What four numbers equal 11 -?
let numbers be: 1, 2 , 3, and 42 X 3 + 4 + 1 = 11
Is there any way 2 pluys 2 can equal anything but 4?
Your question, "Is there any way 2 plus 2 can equal anything but 4?" My answeris YES. If you were to use base 3 math, 2 plus 2 would then equal "11" (base 3) 2 plus 2 = 11 (base 3)
How many yards and feet are there in 11 feet?
There are 3 feet in one yard. Therefore, 11 feet is equal to 11/3 = 3 remainder 2 or 3 yards 2 feet.
10 plus 20-2 - 11 plus 3?
10 plus 20-2 - 11 plus 3 is equal to 20.
How can you make 3 3 3 3 3 equal 11?
((3+3)/3)+(3x3) 6/3 + 9 2 + 9 11
What does 11 and 2 fifths minus 2 and 3 fifths equal?
11 and 2/5 minus 2 and 3/5 = 8 and 4/5 or 8.8
