12 hour clock arithmetic is one of the sub topics of Modular Arithmetic which plays a major role in quantitative aptitude test. It is bit difficult to score marks in competitive exams without knowing the shortcuts related to 7 day clock arithmetic, We have already learned this topic in our lower classes.Even though we have been already taught this topic in our lower classes, we need to learn some more short cuts which are being used to solve the problems in the above topic.
The only thing we have to do is,
we need to apply the appropriate short cut and solve the problems in a
limited time. This limited time will be one minute or less than one minute in most of
the competitive exams.
Students who are preparing to improve their aptitude skills and those who are preparing for this type of competitive test must prepare this topic in order to have better score. Because, today it is bit difficult to score marks in competitive exams without knowing to solve word problems on this topic. Whether a person is going to write placement exam to get placed or a student is going to write a competitive exam in order to get admission in university, they must be knowing the shortcuts related to month arithmetic, day clock arithmetic and hour clock arithmetic. This is the reason for why people must study this topic.
As we mentioned in the above paragraph, a person who wants to get placed in a company and a students who wants to get admission in university for higher studies must write competitive exams like placement test and entrance exam. To meet the above requirement, it is very important to score more marks in the above mentioned competitive exams. To score more marks, they have to prepare this topic. Preparing this topic would definitely improve their marks in the above exams. Preparing this topic is not difficult task. We are just going to remember the stuff that we have already learned in our lower classes
Students will learn, how and when they have to apply shortcuts to solve the problems which are related to this topic. Apart from the regular shortcuts, students can learn some additional tricks in this topic. Already we are much clear with the four basic operations which we often use in math. They are addition, subtraction, multiplication and division. Even though we are much clear with these four basic operations, we have to be knowing some more stuff to solve the word problems on this topic which are being asked in competitive exams. The stuff which I have mentioned above is nothing but the tricks and shortcuts which need to solve the problems in a very short time.
Short cut is nothing but the easiest way to solve word problems on this topic 12 hour clock arithmetic. In competitive exams, we will have very limited time to solve each problem. Then only we will be able to attend all the questions. If we do problems in competitive exams in perfect manner with all the steps, it will definitely take much time and we may not able to attend the other questions. So we need some other way in which the problems can be solved in a very short time. The way we need to solve the problem quickly is called as shortcut.
modular arithmetic, if the divisor is 12, it is called as 12 hour clock
arithmetic. Since the divisor is 12, the remainders must be less than or
equal to 11. So, the remainder are 0,1,2,3,4,5,6,7,8,9,10,11
"0" corresponds to the hour "12"
"1" corresponds to the hour "1"
"2" corresponds to the hour "2"
"3" corresponds to the hour "3"
"4" corresponds to the hour "4"
"5" corresponds to the hour "5"
"6" corresponds to the hour "6"
"7" corresponds to the hour "7"
"8" corresponds to the hour "8"
"9" corresponds to the hour "9"
"10" corresponds to the hour "10"
"11" corresponds to the hour "11"
we have some problems on 12 hour clock arithmetic. You can check your answer online and see step by
1. It is 9 hours now in a 12 hour clock. What will be the time after 18 hours.
2. If the time now in a 12 hour clock is is 9 hours, what was the time 71 hours back?
3. Lily was assigned a work when the time was 7 hours in a 12 hours clock. She completed the work after 72 hours. At what time did she complete the work?
4. Mr. Johnson started a work at 4 hours in a 12 hours clock. He was given 38 hours time to complete the work. But he took 3 hours more to complete the work. At what time did he complete the work.
5. Now the time is 6 hours and Mr. Lenin is at home. Lenin was in Washington 81 hours before. At what time was he in Washington ?