Instructables

Mind reading trick with numbers

Picture of Mind reading trick with numbers
This trick uses simple math to read your mark's mind. This is a great trick for kids, since doing it a few times for an adult would likely give it away.

You will need:
- A brain
- the ability to do simple addition and subtraction
 
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Step 1: Step 1

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You will ask your target to think of a number. It can be any number , but forewarn them that picking complicated numbers(decimals, fractions) will yield complicated math problems.

Step 2: Step 2

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In Step 2 you ask your target to multiply the number they picked by 2.

Step 3: Step 3

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In Step 3 you will ask your target to add 10 to their current total.

Step 4: Step 4

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In Step 4 you will ask them to divide their current total by 2. If they've got themselves into a mess at this point, just start over.

Step 5: Step 5

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We're almost there. In Step 5 ask them to subtract the original number they picked from their current total.

Step 6: Step 6 finally!

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In the final step you politely tell them the number they have in their mind right now is 5.

Step 7: The Trick

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This trick is extremely simple in that you have total control on the outcome.

The secret lies in Step 3 where you ask them to add a number.

You can pick any number divisible by 2 to be added. The final answer will always be the number you asked them to add in Step 3 divided by 2. In this case I asked you to add 10 to your total, hence your final answer was 5.

Good luck and have fun with this.
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welcome1 year ago
What is the trick?????
chad4442 years ago
Oh man, I left my brain at home :(
I already known it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
lol u will need brain hahahaha !!!!!!!!!! nice one
you are right bro
msaleh22 years ago
ha ha ha i already knew this trick give me something different
Bert995 years ago
This is a fun trick with a fun purpose
mrpesas5 years ago
I do this trick with my 8th graders. It works a little better if you say to add 14, so that the final answer is 7. They don't seem to make the connection, whereas they do make the connection with 10 and 5. They won't know exactly how you did it but they seem to figure it out with 10 and 5.
mrpesas5 years ago
Technically it should be "Subtract the First number from your Total" If you Subtract the Total from the First number you will get a -5 (negative five).
Nice instructable, it worked perfectly when I tried it!