Clock and Time Problems, Tips and Tricks, Formula
Clock and Time Problems, Tips and Tricks, Formula
These are the different type of questions asked from this topic.
Type 1: Find the time when the angle between the two hands are given.
Type 2: Find the angle between the 2 hands when the time is given.
Type 3: Find the time, when clocks gaining/losing time.
Type 4: Find the time in the mirror image.
- ക്ലോകിലെ ഓരോ അക്കങ്ങൾക്കിടയിലെ കോണളവ്= 30°.
- മിനിറ്റ് സൂചി ഓരോ മിനുറ്റിലും 6° ചുറ്റും.
- മണിക്കൂർ സൂചി ഒരു മിനുറ്റിൽ ½°ചുറ്റും.
- ഒരുദിവസം Hour, Minute സൂചികൾ 22 തവണ ഒന്നിന് മീതെ ഒന്നായി വരും.
- ക്ലോകിലെ സൂചികൾ 1 ദിവസം, 22 തവണ എതിർദിശയിൽ വരും. ie. 180°.
- ക്ലോകിൽ ഒരു ദിവസം 44 തവണ സൂചികൾ നേർരേഖയിൽ വരും.
- മണിക്കൂർ സൂചിയും മിനിറ്റ് സൂചിയും, 65x5/11 മിനിറ്റിനു ശേഷം ഒന്നിന് മീതെ ഒന്നായി വരും.
Angle Between Hands of Clock
Formula : H x 30 degree - M x 5.5 degree.
H - Hour
M - Minute
Eg: The angle between the minute hand and the hour hand of a clock when the time is 4:20 is:
= 4 x 30 - 20 x 5.5
= 120 - 110
=10 degrees.
Find the time in the mirror image.
Formula : if time is more than 11.00 then subtract it from 23.60 else subtract it from 11.60.
Eg: What will be mirror image of Clock Time 3: 40
= 11:60 - 3:40
= 8:20
N = the number of terms .
S = the sum of the numbers in the set.
Average = S/N .
For example.
The marks of a student in five subjects are 96, 94, 92, 87, and 81, then what is the average score of the student?.
N = 5.
S = 96 + 94 + 92 + 87 + 81 = 450.
A = 450/5 = 90.
Another type questions .
1). There are 36 boys and 44 girls in a class. The average score of boys is 40 and girls are 35. Then what will be the average mark? .
Total mark of 36 boys = 36 x 40 = 1440.
Total mark of 44 girls = 35 x 44 = 1540.
Total mark of 80 Students = 1440 + 1540 = 2980 .
Average mark of the class = (2980 / 80).
...
Code: ABC FIR GJ.
A : America .
B : Britain.
C : Canada.
F : France.
I : Italy.
R : Russia.
G : Germany.
J : Japan.
...
The quickest way to calculate percentages is to multiply numbers first and handle two decimal places later.
For example, 20% of 70 is 20 x 70 = 1400, so the answer is 14. .
70% of 20 is also 14.
To calculate the percentage of 72 or 29, then round up and down to the nearest multiple (70 and 30 respectively) to get a quick approx result.
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