Problem:
Which of these five numbers is the largest?
Answer Choices:
A. 13579+24681
B. 13579−24681
C. 13579×24681
D. 13579÷24681
E. 13579.2468
Solution:
All of the choices, except (C) and (D), are near 13,579. In (D), the result is the product (13579)(2468) while in (C) the result is much less than 13,579.
Answer: D.
The problems on this page are the property of the MAA's American Mathematics Competitions