Comments on: Cool Maths Trick, know your age without telling me

By: Speedlinking - 2 October 2007 | TechnoBuzz.net

Speedlinking - 2 October 2007 | TechnoBuzz.net — Tue, 02 Oct 2007 03:36:30 +0000

[...] Techie Buzz tells us a cool math trick to find our age [...]

By: Links for 30-09-2007

Links for 30-09-2007 — Sun, 30 Sep 2007 19:18:11 +0000

[...] Techie Buzz tells us a cool math trick to find our age [...]

By: Ken Xu

Ken Xu — Thu, 27 Sep 2007 08:41:58 +0000

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!

By: keith

keith — Thu, 27 Sep 2007 05:23:45 +0000

cool, but sometimes you learn something that’s gone back just a day

By: indyank

indyank — Thu, 27 Sep 2007 05:19:34 +0000

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

By: Ashish Mohta

Ashish Mohta — Thu, 27 Sep 2007 05:00:58 +0000

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

By: keith

keith — Thu, 27 Sep 2007 04:09:01 +0000

Theoritically its right, but I need the algorithm that drives this as to how using those numbers are actually giving those correct results

By: Ashish Mohta

Ashish Mohta — Thu, 27 Sep 2007 04:00:12 +0000

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