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Have FUN Guys :)

Living VS Dead person in Facebook

I'd written an article (in Nepali) about the policies regarding dead person's email and their contents in email  and social networking providers (available here) . Facebook, a popular social networking site, has a policy of making a person's page into memorial page after his death. When a person dies, his friends can make his page a memorial page after which the sensitive information like phone number, status updates etc. will be hidden. 

As Facebook is new, number of living people in Facebook are higher than the dead people. But as it grows older, the trend will change. In an article it is mentioned that: "Perhaps someday there will be more memorial pages than pages for living people". So there will be more dead people in Facebook than living people huh !

The Great Walls

You might have noticed the word 'Walls' in the title. Actually, I was reading a technical article, China's Great Firewall spreads overseas. I noticed a new phrase "Great Firewall" for the first time. So, in world there are two great walls: The Great Wall and The Great Firewall. Both lie in China :). 

Study is important

I was grazing in web and got a page where I found following view:

"Once upon a time, there was a boy who had everything what he desired, lots of good friends and a good paying job. Life was a party for him and he used to enjoy every bit of it. But some people have tendency to screw up things when everything goes fine. So did he, and on one fine day he decided to leave everything and go for further studies."

I feel that these are my sentences though somebody else typed first :) . Of course, money is necessary to make life enjoyable but it is not sufficient to keep the happiness in "the whole" life. I reckon that study is what carries the highest weight for making a person happy for whole of his life because it provides more knowledge. The more knowledge one has, the more powerful he can become! This is a reason that motivates me to go for further studies :).

FUN: Sense of Humor

The head of the firing squad asked the condemned man, "Before we shoot you, would you like a last cigarette?" And the prisoner replied, "No thanks, I'm trying to quit smoking!"

References

1. Sense of Humor
2. How important is a sense of humor
   

Fun: I like doctors but I don't like who doctors

Doctor as a noun represents the people who are experts in medicine and treats people when they are ill. However, doctor as a verb means several things. One who doctors changes documents to deceive people. Similarly, doctoring equally mean adding poisonous materials into foods and drinks. So, what do you think , do you always like doctor ?

Fun with mathematics II

We can do multiplication by means of visual ways. I have found both video and article that shows how one can compute the multiplication of ANY DIGIT NUMBERS using visual method.

A. Video
I am hundred percent sure that you will enjoy this video. Watch it first and then we discuss the principle behind this approach.

B. Article

Note: I have copied the following paragraphs and a picture from [1]. If you don't understand here, please go to that site.

Example: Multiply 22 by 13.

Note: This figure is taken from [1]

Draw 2 lines slanted upward to the right, and then move downward to the right a short distance and draw another 2 lines upward to the right (see the magenta lines in Figure 1). Then draw 1 line slanted downward to the right, and then move upward to the right a short distance and draw another 3 lines slanted downward to the right (the cyan lines in Figure 1).

Now count up the number of intersection points in each corner of the figure. The number of intersection points at left (green-shaded region) will be the first digit of the answer. Sum the number of intersection points at the top and bottom of the square (in the blue-shaded region); this will be the middle digit of the answer. The number of intersection points at right (in the yellow-shaded region) will be the last digit of the answer.

This will work to multiply any two two-digit numbers, but if any of the green, blue, gold sums have 10 or more points in them, be sure to carry the tens digit to the left, just as you would if you were adding.

C. Understanding the LOGIC
Below, I've described the way we did the multiplication in our school and if you have noticed, the same thing is happening in the visual method as well. Here it goes:

Ex1
   2 2
x 1 3
-------
   6  6
2 2  x
-------------
2 8 6

Ex2:
1 5 6
3 5 8
---------------------------------------
           8    40   48
     5  25    30   x x
 3 15 18    xx    x x
-------------------------
 5   5  8      4     8 [ while adding , carry should be propagated towards left ]

We know that two non parallel lines always meet exactly at a point. Note that when a number of lines (representing one digit number, e.g. five lines for 5 ) crosses  a number of other lines ( which represents another one digit number), then the number of  points formed by the crossings is equal to their product.

I understood the logic by referring back to my ways of doing the calculation. It may not be clear to you by my explanation. Better visit the website and read the article in such a case.

References:

1. Su, Francis E., et al. "Squaring Quickly." Mudd Math Fun Facts.