Difference between revisions of "1987 AJHSME Problems/Problem 3"

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{{MAA Notice}}

Revision as of 22:52, 4 July 2013

Problem

$2(81+83+85+87+89+91+93+95+97+99)=$

$\text{(A)}\ 1600 \qquad \text{(B)}\ 1650 \qquad \text{(C)}\ 1700 \qquad \text{(D)}\ 1750 \qquad \text{(E)}\ 1800$

Solution

$2(81+83+85+87+89+91+93+95+97+99)$

$=2((81+99)+(83+97)+(85+95)+(87+93)+(89+91))=2(180+180+180+180+180)=25180=1800E$ (Error compiling LaTeX. Unknown error_msg)

See Also

1987 AJHSME (ProblemsAnswer KeyResources)
Preceded by
Problem 2
Followed by
Problem 4
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

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