Rangpur Higher Secondary 2011/1

Problem for Higher Secondary Group from Divisional Mathematical Olympiad will be solved here.
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BdMO
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Rangpur Higher Secondary 2011/1

Unread post by BdMO » Wed Feb 02, 2011 9:05 pm

Problem 1:
After tossing some coins, it is observed that the probability of obtaining $10$ heads and $15$ tails is the same as the probability of obtaining $15$ heads and $10$ tails. Find the least number of coins tossed.

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Moon
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Re: Rangpur Higher Secondary 2011/1

Unread post by Moon » Tue Feb 15, 2011 7:41 pm

$25$
"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.

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