Looking to impress your relatives this Chinese New Year? Here are a couple of Maths tricks that you can showcase in front of your cousins!
Trick 1:
1. Get them to think of a 3-digit number.
2. Multiply it by 7, 11 and 13 and hey presto, you get twice that number.
For example:
1. Number is 123.
2. 123x7x11x13= 123 123!
Trick 2:
1. Think of any 3 digit number but each of the digits must be the same. E.g. 111, 222, 333
2. Add up the digits
3. Divide the 3 digit numbers with the result from step 2.
4. The answer is always 37
for example:
1. The 3 digit number is 111.
2. 1+1+1=3
3 111/3= *drum rolls* 37
Now try it yourself!