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the mass distribution of a coin is so that the chance of getting a head s only 40% .The coin is tossed a 100 times what is the chance -to get more than (inclusive ) 50 heads ? -to get more than (exclusive) 50 tails? to get more than (exclusive) 60 tails and more than (exclusive ) 20 heads ?

if you do the experiment 3times,what is the chance of getting every time less than (inclusive ) 30 heads ?

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    This looks like homework. Please see http://meta.math.stackexchange.com/questions/1803/how-to-ask-a-homework-question and update your question accordingly. Also, it would be nice if you checked your question for spelling, grammar, punctuation and capitalization.2011-09-21

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