Difference between revisions of "2007 Cyprus MO/Lyceum/Problem 18"
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==Problem== | ==Problem== | ||
| − | How many subsets are there for the set A=\{1,2,3,4,5,6,7\}? | + | How many subsets are there for the set <math>A=\{1,2,3,4,5,6,7\}</math>? |
<math> \mathrm{(A) \ } 7\qquad \mathrm{(B) \ } 14\qquad \mathrm{(C) \ } 49\qquad \mathrm{(D) \ } 64\qquad \mathrm{(E) \ } 128</math> | <math> \mathrm{(A) \ } 7\qquad \mathrm{(B) \ } 14\qquad \mathrm{(C) \ } 49\qquad \mathrm{(D) \ } 64\qquad \mathrm{(E) \ } 128</math> | ||
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