There are four 3-digit natural numbers, each of them equals the sum of the cubes of its digits.
Three of them are:
153 = 1^3 + 5^3 + 3^3 = 1 + 125 + 27
370 = 3^3 + 7^3 + 0^3 = 27 + 343 + 0
407 = 4^3 + 0^3 + 7^3 = 64 + 0 + 343
Do you know what the fourth one is?
It's 371.
371 = 3^3 + 7^3 + 1^3 = 27 + 343 + 1
No comments:
Post a Comment