RE: Re: [MTC Global] Maths quiz

Dr Sampath Kumar,

 Thanks for you post ... all your posts are very interesting and valuable, many of then carry important lessons about how to live well!!!

This one provided me a little food for thought. Here is a simple explanation for why your algorithm works and some notes to make it generally applicable in special acses when it would not work.

Let A be the last digit of your cell number. Then, the steps work out as follows:

2.  A

3.  2A

4.  2A + 5

5.  100A + 250

6.  100A + (2013 – (4-digit year your birth))

 

Notes for special cases

 

• a.     If the age is <= 99 years, this is a three digit number of the form ABC (=100 A + 10 B +C) with A as first digit, B as second, and C as third). Thus 100A in the result captures the last cell #. And, the quantity in parenthesis captures your age provided you are 99 year old or less. 

• b.      To make this work for people >= 100 years of age, simply say that if the result after step 6 is a four digit number, the last three digit will be the age of the person and not last two digits. Hopefully we will not face the problem of someone > 1000 years of age, in which case this will need to be modified again.

       c.    This algorithm will not work if the last digit of the cell number is zero because you will end up with a two-digit number after step 6. To take care of this, you need to say that if the answer is less than 100, your cell phone number ends with a 0 and your age is what is left as an answer after step 6.

• d.     To  be finicky, the answer will be correct on December 31 of 2013 when everyone would have completed the year of their age in 2013. Thus if you had applied this formula on October 15, 2013, all persons born after October 15 in their year of birth will be one year younger than given by your algorithm.
• e.     Finally, 1763 would increase by 1 every year starting 2014 December 31.

    

 

Best regards,

 

Ashok

From: join_mtc@googlegroups.com [join_mtc@googlegroups.com] on behalf of Sandesh Pradhan [pradhansandesh@rediffmail.com]
Sent: Monday, January 06, 2014 10:14 PM
To: join_mtc@googlegroups.com
Subject: Re: Re: [MTC Global] Maths quiz

What happens if a person has 2 cell nos with different last digit ?????

On Mon, 06 Jan 2014 19:08:55 +0530 wrote
> This is true for those who are up to 99 years of age. If one is born in 1900 the final answer would be 1013 if the last digit in her mobile number is 9. It seems according to the latest census India has six lakhs centenarians.
RegardsT A Achuth
Kumar
Phone Res: 044-2559 5056Phone Off: 044-3255 4755Mobile : 0 91765-14679


On Sunday, 5 January 2014 3:53 PM, K. Sampath Kumar wrote:

Dear friends,
Good morning.
Enjoy this
Sunday with a maths quiz, it is astonishing.
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LADIES BEWARE. YOUR WELL GUARDED SECRET WILL SOON BE OUT !!


Do not believe? Try it...



I do not know who discoverd this? Found it to beaccurate.
It will take about 15 seconds. Soread and do it at the same time so that you will not lose the pleasure of finding out.
[1] Take a look at your last digit of your cell phone number[2] Use this figure and multiply by 2[3] Then add 5
[4] And then multiply by 50[5] And then add the number 1763[6] The last step; with this number, subtract your birth year.

Now you see a number.
The first digit is the last digit of your phone number, the next digits is your actual age!
Surprising?
This is a very interesting math problem.Really amazing!!

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Have a relaxing Sunday.
With regards,
Dr. K. Sampath Kumar,B.A. (Economics), BGL, M.Com., M.Phil., Cert. A.I.I.B.,
MBA (Finance), MBA (HR & Marketing), ACS, FCMA, Ph. D.,

Professor, SSN School of ManagementC/o. SSN College of Engineering
Rajiv Gandhi Salai (OMR)KALAVAKKAM - 603110
Kancheepuram District, Tamil Nadu, India
Landline : 044-24860668Mobile : 9094405733

Success consists of getting upjust one more time than you fall--
Oliver Goldsmith




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