Cool Maths Trick, know your age without telling me
Just follow this cool little trick and I will be able to ascertain your actual age without you telling me
- How many times do you eat your dinner in a restaurant in a week.
- Now take this answer and multiply it with 2.
- Add 5 to it.
- Multiply the result with 50.
- If this year your birthday has already passed this year add 1756 to the total, if it has already passed add 1757.
- Now subtract the year you were born in from the total, so if you were born in 1960, subtract 1960 from the above total.
If you do not eat your dinner out at all you will only see a 2 digit number as the final results. If you go outside at least once a week to have your dinner you will get a three digit number as the final output.
Examples
Your birthday hasn’t passed this year yet and you eat dinner 3 times a week outside
now 3 x 2 = 6 + 5 = 11 * 50 = 550 + 1756 = 2306 – 1982 = 324
Your birthday has passed this year and you do not eat dinner outside at all
now 0 x 2 = 0 + 5 = 5 * 5- = 550 + 1757 = 2007 – 1982 = 25
The Surprise
Ok now the surprise, in the first example the first number out of the 3 digit number is the number of times you go out for dinner in a restaurant in a week and the last two digits is your current age.
In the second example since you do not eat my dinner out even once a week you got only two digits as the final result and the two digits that come up is your current age.
Go ahead do it yourself and tell me if it works or not.
Awesome isn’t it, well this was forwarded to me as a email but I figured out how this is able to figure out the exact age, well though the suspense will not be revealed today it will be done tomorrow, till then you have time to rack up your brain and think of the answer.
This trick is supposed to work only in the year 2007 but I have figured out how to do it for other forthcoming years too.
Do not forget to tell me your thoughts or answers on how this is done with your comments. Tomorrow I will reveal the answers.
Ashish Mohta
September 26th, 2007 at 8:00 pm #
The trick is to push your sum to current year (plus minus 1) before you subtract your exact year of birth.
First Example: Its 2306, subtract 2306-300 = 2006 .
Second Example: Its 2007
1756 is figure which will push you to current century. Adding 1756 or 1757 is just a precaution for rounding or truncating.
Do tell me if I was right
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keith Reply:
September 26th, 2007 at 8:09 pm
Theoritically its right, but I need the algorithm that drives this as to how using those numbers are actually giving those correct results
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Ashish Mohta
September 26th, 2007 at 9:00 pm #
As I told it has to drive you closer to current year like 2006/2007
Lets Take a look, The calculation is around
X * 2 + 5) * 50 + 1757
Now 2007 – 1757 = 250 . So in any case you need to add 250.
First Case:
So if you are not eating dinner i.e X=0 you are sure to add 250. Pretty Safe.
Second Case:
Now if I eat dinner the sum will add up to more than 2007 so you need to push that figure to first i.e 324 = 3( No of times dinner) and 24 is you age.
Now here is how it goes.
1. (1*2 + 5 )* 50 = 350
2. (2*2 + 5 )* 50 = 450
3. (3*2 + 5 )* 50 = 550
and so on…. and ALL WILL HAVE 50 at the end any number u take.
Now Lets break Figure 1757 = 1700 + 57 ( 50 + 7 )
Again a 50 which will add with above figure( 350 0r 450 ) to give value in 100’s and 7 which will get u “7″ in 2007
(X * 2 + 5) * 50 = Number Always Ending with 50 + 1757 = 2007 + X*100
Where X is number of dinner u take .
1. (1*2 + 5 )* 50 = 350 + 1757 = 2107 = 2007 + 100
2. (2*2 + 5 )* 50 = 450 + 1757 = 2207 = 2007 + 200
3. (3*2 + 5 )* 50 = 550 + 1757 = 2307 = 2007 + 300
Now lets say My Year of Birth is 1980. Now when you subtract
2307 – 1980 = 2007 + 300 – 1980 = 2007 – 1980 + 300 = 27 + 300 = 327
Thats should be the answer
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indyank
September 26th, 2007 at 9:19 pm #
Yes Guess i had come to know of this trick some 15 years back….but the dinner stuff adds story to it…Nice and thanks for bringing my fond memories
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keith Reply:
September 26th, 2007 at 9:23 pm
cool, but sometimes you learn something that’s gone back just a day
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Ken Xu
September 27th, 2007 at 12:41 am #
Ow! I was confused by your calculation.
Not great in Math. Always got bad mark on it! But after see the detail of what Ashish described, I finally see a light! 
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