olymmath

AHSME 1952 Problem 44

    If an integer of two digits is kk times the sum of its digits, the number formed by interchanging the digits is the sum of the digits multiplied by (A)  9−k(B)  10−k(C)  11−k(D)  k−1(E)  k+1\textbf{(A) \ } 9-k \textbf{(B) \ } 10-k \textbf{(C) \ } 11-k \textbf{(D) \ } k-1 \textbf{(E) \ } k+1

    Dataset text NuminaMath-1.5. Quoted with source.

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