Difference between revisions of "2024 AMC 10B Problems/Problem 5"
Line 13: | Line 13: | ||
==See also== | ==See also== | ||
− | {{AMC10 box|year=2024|ab=B|num-b= | + | {{AMC10 box|year=2024|ab=B|num-b=4|num-a=6}} |
− | {{AMC12 box|year=2024|ab=B|num-b= | + | {{AMC12 box|year=2024|ab=B|num-b=4|num-a=6}} |
{{MAA Notice}} | {{MAA Notice}} |
Revision as of 00:38, 14 November 2024
- The following problem is from both the 2024 AMC 10B #5 and 2024 AMC 12B #5, so both problems redirect to this page.
Problem
In the following expression, Melanie changed some of the plus signs to minus signs: When the new expression was evaluated, it was negative. What is hte least number of plus signs that Melanie could have changed to minus signs?
Solution 1
B) 15, 35^2=1225*2=2450<2500.
See also
2024 AMC 10B (Problems • Answer Key • Resources) | ||
Preceded by Problem 4 |
Followed by Problem 6 | |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
All AMC 10 Problems and Solutions |
2024 AMC 12B (Problems • Answer Key • Resources) | |
Preceded by Problem 4 |
Followed by Problem 6 |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | |
All AMC 12 Problems and Solutions |
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions.