Magic To Reveal Age By Phone Number.

This message gone viral on whatsapp!

YOUR PHONE NUMBER. WILL REVEAL YOUR AGE.

 AMAZING -AMAZING-AMAZING

 Your Phone number will reveal your actual Age.
I do not know who discovered this?
         but it is...Really accurate.

It will take about 15 seconds,
read and do it at the same time so that you will not lose the fun.

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 1766.

6- Add bonus 1 if you have celebrated your birthday this year.

7- The last step; with this number, subtract your birth year.

  First digit is  your number and last digits tell your age.

Magical Maths

Magic demystified here! 

Maths Magic Demystified.(Age By Number)

What was the magic?

Let's assume the last digit as 'x'. Now let's go step by step & see how this x is processed.

1- Take a look at your last 4 digit of your cell phone number

x

2- Use this figure and multiply by 2

2x

3- Then add 5

2x + 5

4- And then multiply by 50

50(2x+5) = 100x + 250

This puts the your mobile number's last digit at hundredth place.

5-And then add the number 1766.

100x + 250 + 1766 = 100x + 2016

6- Add bonus 1 if you have celebrated your birthday this year.

100x + 2017

7-The last step; with this number, subtract your birth year.

100x + 2017/2016 - birth year

  
How we calculate our age? If we have already celebrated birthday while calculating age, we take (current year - birthday year) or otherwise (previous year - birthday year). The simple equation applied here as well.

The Shopping Challenge

At a stationary shop, shopkeeper sells notebook at Rs.15, Pen at Rs.1 & Eraser at Rs.0.25. You are asked to purchase 100 objects & you are given Rs.100 note. 

So how many notebooks,pens & erasers would you buy?

Shopping Challenge

Here is what should you do! 

Taking The Shopping Challenge

What was the problem?

Let N = number of notebooks, P = number of pens & E = number of erasers.

From the given maths we get 2 equations as,

N + P + E = 100................(1)

15N +1P +E/4=100…....(2)
 
From (1),

P = 100 - N - E

From (2),

60N + 4P + E= 400

60N + 4(100-N-E) + E = 400

60N + 400-4N-4E + E = 400

56N - 3E = 0

56N = 3E

N/E = 3/56

From the ratio, we get, N=3, E=56.

Putting these in equation (1),

We get,

P=41.

So we should buy 56 erasers,41 pens & 3 notebooks to satisfy the given condition.