HMMT 二月 2018 · 冲刺赛 · 第 4 题
HMMT February 2018 — Guts Round — Problem 4
题目详情
- [ 4 ] Find the sum of the digits of 11 · 101 · 111 · 110011. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HMMT February 2018, February 10, 2018 — GUTS ROUND Organization Team Team ID#
解析
- [ 4 ] Find the sum of the digits of 11 · 101 · 111 · 110011. Proposed by: Evan Chen Answer: 48 There is no regrouping, so the answer is 2 · 2 · 3 · 4 = 48. The actual product is 13566666531.