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发帖数: 2673 | 1 ☆─────────────────────────────────────☆
haotianqi2 (jacky) 于 (Fri Feb 15 22:39:15 2008) 提到:
Four sections: Maths, Problem Solving, Maths Finance, CS. About 5 minutes per question.
Q1:
A bug start from node A of Tetrahedron denoted by ABCD. It has equal
probability to move to other 3 nodes at any node. Ask what is the
probability of it has made 7 moves after returning to node A.
Q2.
Three circles of radius of 1,2,3 are in contact with each other. In the gap
between the three circles put one |
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