alamelu
Joined: Fri Oct 21, 2011 11:55 am Posts: 10
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 Happy Number
Happy Number Do you know what is meant by happy number? A happy number is a number defined by the following procedure: Starting with any non- negative number, replace the number by the sum of the squares of its each digit and repeat the procedure until the number equals 1 (where it will stay).
The following numbers are happy number 1,7,10,13,19,23,28,31,32,44,49,68,70, 79,.....
Example: STEP – 1: 23 = 2^2 + 3^2 = 4 + 9 = 13 STEP - 2: 13 = 1^2 + 3^2 = 1+9 = 10 STEP – 3: 10 = 1^2 + 0^2 = 1 by Ms. S. SUDHA, Assistant Professor, Department of Mathematics, Nazareth College of Arts and Science.
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