Saturday, January 22, 2011

Maths Puzzle 7 - Go Figure

A friend of mine said to me today.

"
NOW go figure this out....
Take the last 2 digits of the year you were born, then add the age you will be this year and it WILL EQUAL 111.
"

So I explained to her.

Let the year of birth be: 19xy (example: 1976 means x=7, y=6)

Age now = 2011-"19xy"= (1900+111)-(1900 +(10x +y))

= 111-10x-y

Last 2 digits = 10x+y

Age+last 2 digits = 111-10x-y + (10x+y) =111
(Incidentally, in the year 2012 the sum will always equal 112 no matter when you were born, meaning any year in the 1900's)

She was very irritated. She asked me "Why cant you look at a straight thing (without looking at the mathematics)?".

So I replied, "ok waist size (in inches) of a married woman + her IQ" =111.

I don't know why didn't speak to me after that. I guess she hates any discussion on figure.

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