







Prime numbers 
19960222 

Charles Hewitt pose la question : I would apprecaite it if you could share with me any algorithm to determine whether a number is prime. Penny Nom lui répond. 





Queue length 
19960222 

Frank Fronhofer II pose la question : How long is the toll booth queue? Harley Weston lui répond. 





e^(i*pi) = 1 
19960219 

Matt Schneider pose la question : Why is e^(i*pi) = 1? Harley Weston lui répond. 





Pascal's Triangle 
19960219 

Richard pose la question : Do you know of any resources that might help us make use of the numeric relationships in Pascal's triangle on a fairly simple basis? Denis Hanson lui répond. 





Neighbourhoods 
19960214 

Robert pose la question : What are neighbourhoods? Harley Weston lui répond. 





Euclid's Pythagorean proof 
19960214 

Sean pose la question : What is Euclid's proof of Pythagoras' theorem? Harley Weston lui répond. 





Stairs 
19960212 

Marianne and Carrie pose la question : How many ways can you run up a flight of stairs? Denis Hanson lui répond. 





What is the variance of the difference of two binomials? 
19960208 

Chris Johnson pose la question : My coworkers and I have come up with different estimates of the zstatistic, and are in particular disagreement over the calculation of Variance for this problem. I am trying to find out, with a five percent level of significance, whether the new form yields a higher rate of return than the old form. Any thoughts, comments, or solutions? Harley Weston lui répond. 





Converting to other bases 
19960206 

Paul pose la question : Converting base 10 numbers to other bases Penny Nom lui répond. 





Number of factors 
19960130 

Chrissy pose la question : What number has exactly 13 positive factors? Penny Nom lui répond. 





Trig identities 
19951130 

Azmat pose la question : Why do we work on the two sides of a trig identity separately? Harley Weston lui répond. 





(3)x(2) 
19951025 

Azmat pose la question : Why is (3)x(2) = 6? Herley Weston and Ed Giesbrecht lui répond. 





Complex numbers 
19951022 

Jacquie pose la question : Why should we teach complex numbers in high school? Harley Weston lui répond. 





Magic Square 
19951020 

Marianne and Carrie pose la question : How can an 8 by 8 square have the same area as a 5 by 13 rectangle? Denis Hanson lui répond. 





What is the golden section? 
19950917 

Cindy pose la question : What is the golden section of a line? Denis Hanson lui répond. 

