To determine if 7 is a happy number or unhappy number, we square each digit in 7 and then add those numbers together.
Then we repeat the process for the result until either the result turns to 1 or we realize it will never be 1.
If it becomes a 1, then it is a happy numbers. Otherwise, it is an unhappy number.
Here is the math to make it more clear:
72 = 49
42 + 92 = 97
92 + 72 = 130
12 + 32 + 02 = 10
12 + 02 = 1
Since we ended up with a 1 at the end, 7 is a:
Happy Number
Is 8 happy or unhappy number?
Do you think you can figure out if a number is happy or unhappy on your own know? Try the next number on our list and then check your answer here.
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