document.write( "Question 1135861: An integer is chosen at random from the first 200 positive integers. If the integer chosen is even, find the probability that it is divisible by 5. \n" ); document.write( "

Algebra.Com's Answer #753579 by ikleyn(52795) $\"\"$ $\"About$

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document.write( "Let N be the set of all integers from 1 to 200, inclusively.\r\n" );
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document.write( "Let E be the subset in N consisting of all even numbers. \r\n" );
document.write( "The number of elements in E is   = 100.\r\n" );
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document.write( "Let T be the subset in E, consisting of numbers of E divisible by 5.\r\n" );
document.write( "It is clear that the set T consists of all integer numbers divisible by 10, and the number of elements in T is 20.\r\n" );
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document.write( "The problem asks : if the integer is randomly chosen from E, what is the probability that it belongs to T ?\r\n" );
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document.write( "Since the set T is the subset in E and has in five times less elements than E, the answer is  OBVIOUS :  this probability is  .\r\n" );
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