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The problems you missed are listed below with answers and explanations.  Look over the explanation for each problem so you can understand why you missed it!

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'); resetdisplay(); for(var i = 0; i <5; i++) { ganswer[i] = prompt(question[i],""); if (ganswer[i] == "quit" || ganswer[i] == "QUIT" || ganswer[i] == "Quit") { break; } q++; if (ganswer[i] == answer[i]) { c++; } else { rightans[i] = 0; w++; } resetdisplay(); } for(var i = 0; i < 10; i++) { if (rightans[i] == 0) { expl = expl + explain[i]; } } parent.frames[0].document.write(expl); parent.frames[0].document.write("
"); } question[0] = 'What is the sign for summations?'; question[1] = 'What does the Sigma look like (the closest representation in our alphabet)?'; question[2] = 'What is easiest way to represent the sum of a sequence?'; question[3] = 'There are two types of combination type functions. One is combination. What is the other?'; question[4] = 'A permutation deals not only with the combination but also with what?'; answer[0] = 'sigma'; answer[1] = 'e'; answer[2] = 'sigma notation'; answer[3] = 'permutation'; answer[4] = 'order'; explain[0] = '#1

The summation symbol is known as the "Sigma".

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Sigma resembles a cross between an E and a Z. We think it looks closest to a E.

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Sigma notation is the easiest way to represent a sum of a sequence.

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Permutation and Combinations are the 2 types of combination type functions.

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Permutation deals with the order that each combination is in also.

'; rightans[0] = 1; rightans[1] = 1; rightans[2] = 1; rightans[3] = 1; rightans[4] = 1; //-->