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Happy Number 
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Joined: Fri Oct 21, 2011 11:55 am
Posts: 10
Post 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.


Wed Mar 25, 2020 9:32 pm
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