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A happy number is one in which you square the digits and sum the answers. Repeat the process and keep doing so. If the answer reaches 1 then it is stuck at 1.
For example, consider 23
2^2 + 3^2 = 4 + 9 = 13
1^2 + 3^2 = 1 + 9 = 10
1^2 + 0^2 = 1 + 0 = 1
So 23 is a happy number.
A sad number - better known as unhappy number - is one that does not ever reach 1.
Consider 24
2^2 + 4^2 = 4 + 16 = 20
2^2 + 0^2 = 4
4^2 = 16
1^2 + 6^2 = 1 + 36 = 37
3^2 + 7^2 = 9 + 49 = 58
5^2 + 8^2 = 25 + 64 = 89
8^2 + 9^2 = 64 + 91 = 145
1^2 + 4^2 + 5^2 = 1 + 16 + 25 = 42
4^2 + 2^2 = 16 + 4 = 20
and we are back to the first step. From here on, the sums of digital squares will keep cycling through these numbers and so cannot ever reach 1. So 24 is a sad number.
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Sad number to 1 to 1000?
No numbers are sad its a type of myth.. Some of them can be lucky but believe me non of them is unlucky/ sad for you.
How do you find the sum of two numbers?
The sum of two numbers is the putting together them.in example: if i have one happy friend and one sad friend the sum of my friends are 2 because i have two friends.Sum = + (the addition sign)in conclusion:The sum of my sad friend and my happy friendOr1 + 1 = 2
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Proffessor Manny has told me that numbers are used to show sympathy wiht curved letters, and big bold letters. Prime can help relate to the feelnigs of mad, and sad using fractions according to Manny who works at Enopi.
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