How to Read Someone's Mind With Math (Math Trick)

Method 1 of 3: Getting the Answer to be 3

1. 
   1
   Have your friend pick a number between 1 and 10.
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2. 
   2
   Tell them to multiply this number by 2.
3. 
   3
   Ask them to multiply the new number by 5.
4. 
   4
   Have them to divide their current number by their original number. (ex: in the 1st step if they pick 3, they should divide their current number, 30, by 3)
5. 
   5
   Tell them to subtract 7 from their number.
6. 
   6
   "Guess" the answer. If you do this right, the answer will always be 3!

Method 2 of 3: Making it Trickier

1. 
   1
   Have your friend pick any number between 1 and 10.
2. 
   2
   Tell them to multiply it by 2.
3. 
   3
   Choose a number (use an even number because it's easier). Ask your friend to add this number to the one in their head.
4. 
   4
   Tell them to divide the new number by 2.
5. 
   5
   Tell them to subtract the number they chose from the number in their head.
6. 
   6
   "Guess" the answer. If you do this right, the answer should be half the number you gave them to add in step 3.

Method 3 of 3: Getting the Answer to be 13

1. 
   1
   Have your friend pick a number between one and ten.
2. 
   2
   Tell them to multiply it by nine.
3. 
   3
   Tell them to add the digits together. If it is a single digit (i.e. 9) add 0.
4. 
   4
   Tell them to add four.
5. 
   5
   Their final number will be 13.

math magic

Multiply Up to 20X20 In Your Head

In just FIVE minutes you should learn to quickly multiply up to 20x20 in your head.  With this trick, you will be able to multiply any two numbers from 11 to 19 in your head quickly, without the use of a calculator.
I will assume that you know your multiplication table reasonably well up to 10x10.
Try this:

• Take 15 x 13 for an example.
• Always place the larger number of the two on top in your mind.
• Then draw the shape of Africa mentally so it covers the 15 and the 3 from the 13 below. Those covered numbers are all you need.
• First add 15 + 3 = 18
• Add a zero behind it (multiply by 10) to get 180.
• Multiply the covered lower 3 x the single digit above it the "5" (3x5= 15)
• Add 180 + 15 = 195.

That is It! Wasn't that easy? Practice it on paper first!
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Want to Learn More?

The one book I recommend

May be out of print

"Super Math-E-Magics"
by V.A. Stephen Lenaghan
It may be available from Amazon.com or one of the other online sellers of used books

The 11 Rule

You likely all know the 10 rule (to multiply by 10, just add a 0 behind the number) but do you know the 11 rule? It is as easy! You should be able to do this one in you head for any two digit number. Practice it on paper first! To multiply any two digit number by 11:

• For this example we will use 54.
• Separate the two digits in you mind (5__4).
• Notice the hole between them!
• Add the 5 and the 4 together (5+4=9)
• Put the resulting 9 in the hole 594. That's it! 11 x 54=594

The only thing tricky to remember is that if the result of the addition is greater than 9, you only put the "ones" digit in the hole and carry the "tens" digit from the addition. For example 11 x 57 ... 5__7 ... 5+7=12 ... put the 2 in the hole and add the 1 from the 12 to the 5 in to get 6 for a result of 627 ... 11 x 57 = 627
Practice it on paper first!


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Finger Math: 9X Rule

To multiply by 9,try this:
(1) Spread your two hands out and place them on a desk or table in front of you.
(2) To multiply by 3, fold down the 3rd finger from the left. To multiply by 4, it would be the 4th finger and so on.
(3) the answer is 27 ... READ it from the two fingers on the left of the folded down finger and the 7 fingers on the right of it.

This works for anything up to 9x10!

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Square a 2 Digit Number Ending in 5

For this example we will use 25

• Take the "tens" part of the number (the 2 and add 1)=3
• Multiply the original "tens" part of the number by the new number (2x3)
• Take the result (2x3=6) and put 25 behind it. Result the answer 625.

Try a few more 75 squared ... = 7x8=56 ... put 25 behind it is 5625.
55 squared = 5x6=30 ... put 25 behind it ... is 3025. Another easy one! Practice it on paper first!

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Square 2 Digit Number: UP-DOWN Method

Square a 2 Digit Number, for this example 37:

• Look for the nearest 10 boundary
• In this case up 3 from 37 to 40.
• Since you went UP 3 to 40 go DOWN 3 from 37 to 34.
• Now mentally multiply 34x40
• The way I do it is 34x10=340;
• Double it mentally to 680
• Double it again mentally to 1360
• This 1360 is the FIRST interim answer.
• 37 is "3" away from the 10 boundary 40.
• Square this "3" distance from 10 boundary.
• 3x3=9 which is the SECOND interim answer.
• Add the two interim answers to get the final answer.
• Answer: 1360 + 9 = 1369

With practice this can easily be done in your head.

Thanks To Ryan

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Multiply By 4

To quickly multiply by four, double the number and then double it again.
Often this can be done in your head.
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Multiply By 5

To quickly multiply by 5, divide the number in two and then multiply it by 10.  Often this can be done quickly in your head.
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The 11 Rule Expanded

You can directly write down the answer to any number multiplied by 11.

• Take for example the number 51236 X 11.
• First, write down the number with a zero in front of it. 051236
  The zero is necessary so that the rules are simpler.
  
• Draw a line under the number.
• Bear with me on this one. It is simple if you work through it slowly. To do this, all you have to do this is "Add the neighbor". Look at the 6 in the "units" position of the number. Since there is no number to the right of it, you can't add to its "neighbor" so just write down 6 below the 6 in the units col.
• For the "tens" place, add the 3 to the its "neighbor" (the 6). Write the answer: 9 below the 3.
• For the "hundreds" place, add the 2 to the its "neighbor" (the 3). Write the answer: 5 below the 2.
• For the "thousands" place, add the 1 to the its "neighbor" (the 2). Write the answer: 3 below the 1.
• For the "ten-thousands" place, add the 5 to the its "neighbor" (the 1). Write the answer: 6 below the 5.
• For the "hundred-thousands" place, add the 0 to the its "neighbor" (the 5). Write the answer: 5 below the 0.
  That's it ... 11 X 051236 = 563596

Practice it on paper first!

fb tricks

Facebook chat is one of the coolest and most useful features in FB. My dilemma, however, was how to limit the number of people I chat with every time I log in. I certainly can’t accommodate them all but I don’t want them to feel like I’m rejecting them when I don’t send them a reply. I didn’t know back then that it is possible to appear online only to a few selected friends. A friend of mine actually gave me this idea which I’m sure would be of use to you, too.
Here’s how to do it: 
Go to Chat found at the lower right side of the page and then, click on Friends List. A small window will appear where you can type and create a new list.  You could name it anything you want. In this example I named it “Blocklist”. On your newly created list, select and start dragging those names that you wish to block. Then set your status to appear offline to this particular group of friends. With this, you now appear completely invisible to them. Try it now.

4. Upload Photos and Videos Using Your Mobile Phone:

The last time I went to Bantayan Island, I met this cool new friend who has uploaded his fresh photos and videos directly from his Blackberry Phone onto his Facebook account instantaneously. Interestingly, this process is quite simple and you can do it on all smartphones. Just visit this linkand learn how you could start sharing your videos and photos via phone and email.

5. Cool Magic Circles on Facebook: This is really simple, though I admit I didn’t get this the first time. This cool magic circles appearing on your page is just one of the many secret tricks you’ll find in Facebook. You might want to give this a try.
Here’s how: Press Up, Up, Down, Down, Left, Right, Left, Right, B, A, Enter key then press up & down.
Now, just in case it doesn’t work on your first try, try reloading your page again by pressing F5 and repeat the process.

7. Quickly Upload Photos from Picasa Application to Facebook:

It was a great challenge for me to find an alternative photo hosting application, an application that would really work to my liking. Picasa happens to be it. I find this application to be useful in sharing and organizing photos of various events like reunions and parties. It has plenty of exciting features; one of them is the ability to upload photos directly to your FB account. Here’s what you need to do to download and install PICASA version 2 or 3:

• Click here to download.
• Once the installation is complete, click Picasa application here to install the plugin.
• Next, add the new Facebook button to your Picasa.

That’s it. You may now start uploading and sharing your photos using Picasa.

8. Use Facebook search like a pro:

Have you experienced looking for someone in Facebook with such difficulty? If yes, then perhaps you might want to try using the Search Box. This is a powerful tool that can help you find your old friends, celebrities, organizations, or your favorite band with no difficulty. Go ahead and be like a pro – click here to learn how.

9. Facebook flip status updates:

Are you in the mood to have a little fun? Try flipping your FB status upside down. I’m sure your friends will be tilting their heads too trying to read your message. Ain’t that funny? It sure is! :) Go ahead and flip your Facebook status now. Click here.

10 : Changing fonts on Facebook status:

And I’m saving the best for the last. By default your status update have only one font, but you can always use 3rd party service to change the font of your status update. Here is a cool website which you can use to change font for your Facebook status updates.
I hope you have enjoyed all Fb tricks mentioned above. We will keep sharing more cool Facebook tips in future, don’t forget to join us on Facebook.

Read more: 10 Facebook Tips and Tricks That You Should Know
Follow us: attitudelovers/facebook.com

ways to do google tricks

Method 1 of 7: The o's in Google

1. 
   1
   Type the following link in your address box:http://darkartsmedia.com/google.html.
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2. 
   2
   Make sure all of the letters are in lowercase.
3. 
   3
   Place your fingers on the o's in Google. Click anywhere and ta-da, it has vanished.
4. 
   4
   Place your fingers back on the o's and again click anywhere.
5. 
   5
   It has come back again! But don't do this again or else it will take you to the real Google site because this is a fake one. So if you want to do it again go back and then do it.

Method 2 of 7: Zerg rush

1. 
   1
   Type in the key words "Zerg rush". The capitalization is irrelevant.
2. 
   2
   The Google O's will fall. Plus, they will appear to be eating away at the entire page.
3. 
   3
   Click away. Your goal is to click on them and get rid of them.

Method 3 of 7: Google gravity

1. 
   1
   Go to the real Google page.
2. 
   2
   Type in "Google gravity".
3. 
   3
   Click the "I'm feeling lucky" button. It will send you to a site named mr.doob.com. You can type things in the search bar and they will fall out the top of the page!

Method 4 of 7: Google celebrations

There are various anniversary or other celebratory recognitions that Google makes and that can still be accessed after the event.

1. 
   1
   Check out the Google Pacman game.
   • Go to regular Google.
   • Type in "Google Pacman".
   • Hit "I'm feeling lucky".

Method 5 of 7: Google rainbow

1. 
   1
   Go to Google.com.
2. 
   2
   Search "Google Rainbow".
3. 
   3
   Click "I'm Feeling Lucky".
4. 
   4
   Google Rainbow! You can now search under the rainbow.

Method 6 of 7: Google space

1. 
   1
   Go to regular Google.
2. 
   2
   Search "Google Space" (capitalization unnecessary).
3. 
   3
   Open up the hyperlink saying "Google Space - Mr.doob".
4. 
   4
   Have fun as everything floats around!
   • Do not press "images", "maps", etc. It will open regular Google!

Method 7 of 7: Google barrel roll

1. 
   1
   Go to google.com,
2. 
   2
   Type in 'Do a Barrel Roll' (capitalization not needed).
3. 
   3
   Hit enter. The screen should roll around in a circle.