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Have Fun With Numbers - Telephone Trick

[You may need to use a calculator - you might not be able to do this one in your head…]

This only works if you have a 7-digit phone number.

1. Key in the first three digits of your 7-digit phone number (NOT the area code);
2. Multiply by 80;
3. Add 1;
4. Multiply by 250;
5. Add the last 4 digits of your phone number;
6. Add the last 4 digits of your phone number again;
7. Subtract 250;
8. Divide number by 2.

What you should have now is your actual phone number.