Difference between revisions of "1993 AJHSME Problems/Problem 12"
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==Problem== | ==Problem== | ||
− | If each of the three operation signs, <math>+</math>, <math>-</math>, <math>\times </math>, is used exactly ONCE in one of the blanks in the expression | + | If each of the three operation signs, <math>+</math>, <math>--</math>, <math>\times </math>, is used exactly ONCE in one of the blanks in the expression |
<cmath>5\hspace{1 mm}\underline{\hspace{4 mm}}\hspace{1 mm}4\hspace{1 mm}\underline{\hspace{4 mm}}\hspace{1 mm}6\hspace{1 mm}\underline{\hspace{4 mm}}\hspace{1 mm}3</cmath> | <cmath>5\hspace{1 mm}\underline{\hspace{4 mm}}\hspace{1 mm}4\hspace{1 mm}\underline{\hspace{4 mm}}\hspace{1 mm}6\hspace{1 mm}\underline{\hspace{4 mm}}\hspace{1 mm}3</cmath> |
Revision as of 00:46, 16 January 2023
Problem
If each of the three operation signs, ,
,
, is used exactly ONCE in one of the blanks in the expression
then the value of the result could equal
Solution
There are a reasonable number of ways to place the operation signs, so guess and check to find that .
See Also
1993 AJHSME (Problems • Answer Key • Resources) | ||
Preceded by Problem 11 |
Followed by Problem 13 | |
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 AJHSME/AMC 8 Problems and Solutions |
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions.