Mathematics Is Fun

Always 5

 

Find a calculator or a pencil and paper.

Ask your friend (or everyone in the room) to choose any number.

Example : 43

 

Add  the next highest number to it

43 + 44 = 87

 

Add 9

87 + 9 =  96

 

Divide by 2

96  / 2 = 48

 

Subtract your original...