Tuesday, September 20, 2011

Mathematical magic tricks

Trick#1

Motive:
With this trick you can tell someone their age the month that they were born in and the day they were born on.

Steps:
Now tells your friend to:
1)   Write down the number of the month they were born on.
2)   Multiply by 100.
3)    Add the day of the month they were born on.
4)  Multiply by 2.
5)  Add 9.
6)  Multiply by 5.
7)  Add 8.
8)  Multiply by 10.
9)  Subtract 419.
10) Add his age.
11) Subtract 111.

Prediction:
The 2 digits on the right is the person’s age. The 2 digits on the left from the person’s age is the day that they were born on. The numbers that are left are the month your friend was born in.

Trick#2

Motive:
Predict the answer for a long mathematics sum.

Steps:
1.Tell your friend to think a three-digit number and have the largest number first then the smaller number and then the smallest number. For example: 742 or 971.

2.Tell him not to let you see his number.( Let’s take that the number is 861)

3.Next tell to turn the number around. (The number would be 168).

4.Now tell to subtract the smallest number from the largest one. (This would be 693). 

5.Now ask your partner to turn that number around.(the number would be 396). 

6.Now add them both together. (This would be 1089)

Now give him or her your paper and then watch his face when he sees that your number was 1089.

Prediction:
The answer is always going to be 1089 so always write that number down.