HMMT 十一月 2015 · 冲刺赛 · 第 34 题
HMMT November 2015 — Guts Round — Problem 34
题目详情
英文原题
- [ 20 ] Let n be the second smallest integer that can be written as the sum of two positive cubes in two
( ( ) )
a ndifferent ways. Compute n . If your guess is a , you will receive max 25 − 5 · max , , 0 points,
n arounded up.
解析
英文解析
- [ 20 ] Let n be the second smallest integer that can be written as the sum of two positive cubes in two
( ( ) )
a ndifferent ways. Compute n . If your guess is a , you will receive max 25 − 5 · max , , 0 points,
n arounded up.
Proposed by: Alexander Katz
Answer: 4104
3 3 3 3
A computer search yields that the second smallest number is 4104 . Indeed, 4104 = 9 + 15 = 2 + 16