An _x0093_Armstrong number_x0094_ is an n-digit number that is equal to the sum of the nth powers of its individual digits. For example, 153 is an Armstrong number because it has 3 digits and 13 + 53+33 = 153. What is the digit k in the Armstrong number 16k4?

(A) 2 (B) 3 (C) 4 (D) 5 (E) 6

Question

15 October, 19:16

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Marques · Answer 1

Ans is (B) 3.

1^4 + 6^4 + 3^4 + 4^4 = 1634

An _x0093_Armstrong number_x0094_ is an n-digit number that is equal to the sum of the nth powers of its individual digits. For example, 153 is an Armstrong number because it has 3 digits and 13 + 53+33 = 153. What is the digit k in the Armstrong number 16k4?(A) 2 (B) 3 (C) 4 (D) 5 (E) 6