2007-01-11 04:59:34 · 22 answers · asked by aydin v 1 in Science & Mathematics ➔ Mathematics
Try 2 hours after 11 o'clock. You've been doing cyclic arithmetic.
2007-01-11 05:05:02 · answer #1 · answered by Anonymous · 3⤊ 1⤋
In a mod 12 system, 11 + 2 is indeed equal to 1. You use this kind of system every day when you tell time (unless you use military time).
If it is 11 o'clock (AM or PM) and your parking meter will run out after 2 hours, when do you have to go and put in more quarters. To answer that question you add 2 to 11 in mod 12, Adding 1 gets you to noon, adding the second 1 gets you to 1 o'clock.
Modular arithmetic is slightly different changing the base. You could have base 12 arithmetic, but there 11 + 1 = 10. You don't go back to zero when you reach 12. In base 12, the number 10 means 1x12 + 0 * 1 or 13 in base 10.
Think about other mod systems you use in your life: your odometer on your car (which measures how far you car has been driven) is mod a really big number. But then it rolls over to zero.
2007-01-11 05:12:13 · answer #2 · answered by Jon K 2 · 0⤊ 0⤋
11/13 + 2/13 = 1
2007-01-11 05:08:12 · answer #3 · answered by soul_plus_heart_equals_man 4 · 0⤊ 0⤋
11+2=13. You left the 3 out.
2007-01-11 05:02:50 · answer #4 · answered by Anonymous · 0⤊ 2⤋
Ah, but what if your running with a 24 hour clock.
11+2 then equals 13. Your theories only work with a 12 hour clock.
What if you had one of those clocks that worked in reverse,
11+2 then works out to 9.
And to top it all, what if your clock was neither 12 or 24 hour versions but simply had a flat battery. Then your theory would be totally wrong cos it would always be the wrong time, except once in 24 hours
2007-01-11 08:48:15 · answer #5 · answered by pop c 2 · 0⤊ 0⤋
Think of a clock. If the hour hand is at 11 and you
advance 2 hours, you arrive at 1.
In clock arithmetic, 11 + 2 = 1.
2007-01-11 06:14:50 · answer #6 · answered by steiner1745 7 · 0⤊ 0⤋
11+2=13 = 1 bakers dozen.
2007-01-11 07:32:54 · answer #7 · answered by Anonymous · 0⤊ 0⤋
only if your looking at a 12 hour clock and your working with hours 11 12 1
2007-01-11 05:16:09 · answer #8 · answered by smiley 4 · 1⤊ 0⤋
11 o'clock +2 hours = 1 o'clock
2007-01-11 05:18:11 · answer #9 · answered by Agustin-Jean F 4 · 0⤊ 0⤋
Sorry, but i can't figure that one out. Last time i went to school 11+2 was 13.
2007-01-11 05:06:30 · answer #10 · answered by S 4 · 0⤊ 1⤋