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HMMT 二月 2001 · 冲刺赛 · 第 55 题

HMMT February 2001 — Guts Round — Problem 55

专题
Contest Math / 竞赛数学
难度
L3
来源
HMMT

题目详情

英文原题

  1. [7] How many multiples of 7 between 10 and 10 are perfect squares?
解析

英文解析

  1. [7] How many multiples of 7 between 10 and 10 are perfect squares?
    [√ ] [√ ]
    9 6
    10 10
    Solution: − = 4517 − 142 = 4375 .
    2 2
    7 7