Difference between revisions of "2005 AMC 12B Problems/Problem 15"
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== Problem == | == Problem == | ||
| + | The sum of four two-digit numbers is <math>221</math>. Non of the eight digits is <math>0</math> and no two of them are the same. Which of the following is '''not''' included among the eight digits? | ||
| + | |||
| + | <math> | ||
| + | \mathrm{(A)}\ 1 \qquad | ||
| + | \mathrm{(B)}\ 2 \qquad | ||
| + | \mathrm{(C)}\ 3 \qquad | ||
| + | \mathrm{(D)}\ 4 \qquad | ||
| + | \mathrm{(E)}\ 5 | ||
| + | </math> | ||
== Solution == | == Solution == | ||
Revision as of 11:31, 26 March 2010
Problem
The sum of four two-digit numbers is 
. Non of the eight digits is 
and no two of them are the same. Which of the following is not included among the eight digits?
