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|{{Color-table|theme=3|title=Fun corner}}
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===[http://karnatakaeducation.org.in/KOER/en/index.php/Mathematics_fun_corner#Phone_number_birthday_puzzle Phone number birthday puzzle]===
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|[[File:phone-number-keypad.jpg|150px]]
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| '''YOUR PHONE NUMBER WILL REVEAL YOUR AGE'''
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Your Phone number will reveal your actual Age. It will take about 15 seconds,read and do it at the same time so that you will not lose the fun.
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#Take a look at your last digit of your cell phone number
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#Use this figure and multiply by 2
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#Then add 5
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#And then multiply by 50
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#And then add the number 1765
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#The last step; with this number, subtract your birth year.
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Now you see a three-digit number. The first digit is the last digit of your phone number, the next two digits are your actual age! You can use the attached [http://karnatakaeducation.org.in/KOER/en/images/1/17/Phone_number_birthday_puzzle.ods spreadsheet] to solve this and find out why it works!!