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Armstrong number definition fix (#4466)

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This is a documentation fix. This fix patches a mistake in the description of the Armstrong number.

* * Doc fix

* Armstrong number is not the sum of cube's of number digits, but
the sum of number's digits each raised to the power of the number of digits

* Update armstrong_numbers.py

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Grigoriy Hanin 2021-05-31 02:41:07 +03:00 committed by GitHub
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maths/armstrong_numbers.py
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@ -1,5 +1,6 @@
"""
An Armstrong number is equal to the sum of the cubes of its digits.
An Armstrong number is equal to the sum of its own digits each raised
to the power of the number of digits.
For example, 370 is an Armstrong number because 3*3*3 + 7*7*7 + 0*0*0 = 370.
An Armstrong number is often called Narcissistic number.
"""