A four headed giant has $63$ children. He wants to name them. The names should be in three English letters. A letter can be used more than one time but the names shouldn't be same. What is the least number of the letters
used in the names?
Dhaka Junior 2011/7
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Please don't post problems (by starting a topic) in the "Junior: Solved" forum. This forum is only for showcasing the problems for the convenience of the users. You can post the problems in the main Divisional Math Olympiad forum. Later we shall move that topic with proper formatting, and post in the resource section.
Please don't post problems (by starting a topic) in the "Junior: Solved" forum. This forum is only for showcasing the problems for the convenience of the users. You can post the problems in the main Divisional Math Olympiad forum. Later we shall move that topic with proper formatting, and post in the resource section.
Re: Divitional math olympyad 2011
"Inspiration is needed in geometry, just as much as in poetry." -- Aleksandr Pushkin
Please install LaTeX fonts in your PC for better looking equations,
learn how to write equations, and don't forget to read Forum Guide and Rules.
Please install LaTeX fonts in your PC for better looking equations,
learn how to write equations, and don't forget to read Forum Guide and Rules.
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Re: Dhaka Junior 2011/7
Answer=4 total different names=64
A,B=6 A=1
A,C=6 B=1
B,C=6 C=1
A,D=6 D=1
B,D=6
C,D=6
ABC=6 ABD=6 ACD=6 BCD=6
A,B=6 A=1
A,C=6 B=1
B,C=6 C=1
A,D=6 D=1
B,D=6
C,D=6
ABC=6 ABD=6 ACD=6 BCD=6