Mymensingh Higher Secondry 2018#10
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Please don't post problems (by starting a topic) in the "X: Solved" forums. Those forums are only for showcasing the problems for the convenience of the users. You can always 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 "X: Solved" forums. Those forums are only for showcasing the problems for the convenience of the users. You can always 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.
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There are $20$ boxes on a table.There are $2$ balls in the $1$st box,$3$ balls in the $2$nd box,$4$ balls in the $3$rd box,.........,$21$ balls in the $20$th box.Bijoy wants to pick $2$ balls from any particular box. In how many ways he can do this work?
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- Posts:1007
- Joined:Sat Dec 09, 2017 1:32 pm
Re: Mymensingh Higher Secondry 2018#10
Answer
Solution