Guess your phone number
Guess your phone number 1.Grab a calculator (You won’t be able to do this one in your head) 2. Key in the first four digits of your phone number (for example the number is 0771234567 then 7123 is the first four number) e.g 7123 3. Multiply by 80 e.g 7123*80=569840 4. Add 1 e.g 569840+1=569841 Read More …