'Perfect numbers' presentation slideshows

A New Connection Between the Triangles of Stirling and Pascal

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Astronomy 1100 Introduction to Astrophysics

Astronomy 1100 Introduction to Astrophysics.

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VEDIC MATHEMATICS : Primes

VEDIC MATHEMATICS : Primes. T. K. Prasad http://www.cs.wright.edu/~tkprasad. Divisibility. A number n is divisible by f if there exists another number q such that n = f * q. f is called the factor and q is called the quotient . 25 is divisible by 5

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Maths Magic CTYI Review Session David Goulding

Maths Magic CTYI Review Session David Goulding. These slides were presented to the parents during the final class of the course Main aim is to give an overview of the different topics covered during the eight weeks

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Computability

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Introduction to Pyrex sweetapp/pyrex September 2002

Introduction to Pyrex http://www.sweetapp.com/pyrex September 2002. Brian Quinlan brian@sweetapp.com. What is Pyrex?. Pyrex is a language for writing Python extension modules Pyrex has a Python-like syntax that gets compiled into C code

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CS1010: Programming Methodology comp.nus.sg/~cs1010/

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CS1010: Programming Methodology comp.nus.sg/~cs1010/

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The NumbersWithNames Program

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September 23 rd Lecture

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September 23 rd Lecture

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More While Loop Examples

More While Loop Examples . CS303E: Elements of Computers and Programming. Quote of the Day. Tell me and I forget. Show me and I remember. Involve me and I understand. - Anonymous Chinese Proverb. Question : Nested If Statements. What is the expected output? if(1<10 and 6<7):

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Warm Up 1

Warm Up 1. Suppose the factor game board was extended to 49. What would the best first move be? Why? What would be the worst first move? Why? What do you get when you divide 84 by 14? What does that tell you about 84 and 14?

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Classifying Numbers

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Perfect Numbers (3/26)

Perfect Numbers (3/26). Definition. A number is called perfect if it is equal to the sum of its proper divisors. Examples: 6 and 28 are the first two (check!). Question. Are there infinitely many? Answer. Unknown.

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Euclid of Alexandria

Euclid of Alexandria. Euclid.

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How many perfect numbers between 1 and 100 are also divisible by 3?

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