AMC 8 1990 Problem 6

AMC8 1990 年第 6 题

表达式与运算★★☆☆☆
Which of these five numbers is the largest?
以下五个数中哪个最大?
  1. A.13579+12468\displaystyle 13579+\frac{1}{2468}
  2. B.13579−12468\displaystyle 13579-\frac{1}{2468}
  3. C.13579×12468\displaystyle 13579\times \frac{1}{2468}
  4. D.13579÷12468\displaystyle 13579\div \frac{1}{2468}
  5. E.13579.2468

正确答案 · Correct Answer

D

解析 · Solution

Solution 1

Choices (A) and (E) are slightly more than 13579.
Choice (B) is slightly less than 13579.
Choice (C), which is equal to 135792468\displaystyle \frac{13579}{2468}, is much less than 13579.
Choice (D), which is equal to 13597×2468, is much larger than 13579.
So 13579÷12468\displaystyle 13579 \div \frac{1}{2468} is by far the largest of the answer choices.

继续练习

真题版权归属 MAA(AMC)。本站仅供学习用途。版权方如有异议,请联系本站予以下架。

Problems © MAA (AMC). This site is for study purposes only. Rightsholders may contact us for removal.