







n(n+1) est un nombre pair 
20071202 

Christel pose la question : Bonjour. J'aimerai savoir comment l'on peut démontrer que n(n+1) est un nombre pair. Si vous avez une méthode...Merci d'avance Claude Tardif lui répond. 





La somme des «N» premiers nombres naturels impairs 
20071009 

Dominique pose la question : Quelle expression algebrique représente la somme des «N» premiers nombres naturels impairs ? Claude Tardif lui répond. 





Zero 
20010315 

Alexandre pose la question : j'aimerais beaucoup savoir si le chiffre zéro est considéré comme étant soit:  pair
 impair
 pair et impair à la fois
 ni pair ni impair.
Claude Tardif lui répond. 





Matched pairs 
20171213 

Lin pose la question :
PLEASE HELP WITH THIS VERY DIFFICULT STATISTICS QUESTION(the process would really help)
Imagine you and your 4 study group partners are interested in whether all
those hours you spent together working on statistics problems for midterm
exam 2 actually helped your group's performance on that exam relative to its
performance on the first midterm exam. Suppose the first and second midterm
grades were as follows:
Is there sufficient evidence (at a = :05) to conclude that the group performed
better on midterm 2? Please provide all your calculations.

midterm 1 
midterm 2 
A 
25 
28 
B 
20 
19 
C 
15 
21 
D 
16 
25 
E 
20 
22 
Penny Nom lui répond. 





A pair of equations with fractions 
20160511 

tiya pose la question : hello, i want to know how to solve this question.
m/6+2n/3=6
m/10=2n/5=2 Penny Nom lui répond. 





Three chickens weighed in pairs 
20150901 

Shelly pose la question : My son brought home a problem of 3 chickens of different weights listing their weights in different groupings of 2. We are to determine the weight of all three together. I think it's a ratio problem, but I am too far removed to formulate a plan to teach him how to solve it. Robert Dawson and Penny Nom lui répond. 





Points on the xaxis 
20150314 

Justin pose la question : jamie tells her friend that ordered pairs that have an xcoordinate of O line xaxis. She used the origin as an example. Describe Janine error. Use a counterexample to explain why Janine statement is false Penny Nom lui répond. 





Scheduling meetings with pairs of people 
20150122 

Jacey pose la question : I am trying to figure out a formula/system to pair up a list of people so they meet with each other every month, but they rotate who they meet with. Right now I have 13 people and I would like to just type in their names and then have the system put each person with someone else every month and rotate so no one gets the same person twice. Can this be done? Victoria West lui répond. 





Golf for 8 playing 7 rounds 
20140403 

Evan pose la question : We are going on a golf trip to Scotland and are trying to work out the pairings. There are 8 of us playing 7 rounds. We would like to be partnered up in 2's with everyone once and have evenly split up foursomes. Thanks for the help Victoria West lui répond. 





12 golfers, 6 rounds 
20140327 

Bill pose la question : I have a group of 12 golfers playing 6 rounds of golf. I am
looking for a pairings schedule that allows each golfer to play
at least one round in a foursome with each of the other eleven
players.
Can you provide me with a solution? Victoria West lui répond. 





7 golfers playing 4 days of golf 
20090130 

Trish pose la question : I have 7 golfers and we are playing 4 days of golf. I would like to do pairings so that everyone gets to play with each other at least one time. Can you help with this? Not a math whiz here and looking for help. Thank you. Victoria West lui répond. 





Six golfers 
20081125 

Joe pose la question : I have a group of 6 golfers wanting to play 3 or 4 rounds but with different players each day if possible. We know we cannot make it happen without some playing with the same person. Can you provide some pairings for this? Victoria West lui répond. 





Ordered pairs 
20070509 

chasity pose la question : a teacher wishes to schedule a quiz during part of a twohour class. the equation 1+e=120 can be used to find the available lecture time "1" given that "e" minutes are planned for the quiz. determine the ordered pairs that satisfy the equation if the domain is {20,30,45,60} Penny Nom lui répond. 





The point slope form of a line 
20041026 

Jack pose la question : Given a set of ordered pairs, ie (1,1) (2,4) (3,7), how does one determine the rule f(n) other than by trial and error Penny Nom lui répond. 





Three numbers are added in pairs 
20040212 

Jane pose la question : When three numbers are added in pairs, the sums of the pairs are 22, 39, and 45. What are the three numbers? Penny Nom lui répond. 





Pairing boys and girls 
20040201 

Terri pose la question : Suppose 7 boys and 7 girls are assigned to work in pairs of one boy and one girl. Explain what equation can be used and how you would use a simpler problem to solve these types of questions. Penny Nom lui répond. 





Pairs of prime numbers 
20031013 

Nikolas pose la question : Use pairs of prime numbers to find all the numbers less than 50 that have only two prime factors. Make an organized list. Penny Nom lui répond. 





A sequence of number pairs 
20020110 

Terry pose la question : Three is the first number of a pair, and 8 is the second.
a. If 50 is the first number, what is the second number? b. If 200 is the first number, what is the second number? c. If 89 is the second number, what is the first number? d. If a number n is the first number, what is the second number?
38 411 514 617 ____ ____ ____ 1029 ____ ____ ____
Peny Nom lui répond. 





12 pairs playing bridge 
20011109 

Diana pose la question : I have 12 pairs playing bridge against one another for 12 games. I need to have each pair partnered with another pair  but only once. I'm looking for a schedule for play for all 12 games. They should only be able to play against another team only once also. (ex: 1/2 v 3/4 then 4/2 v 3/1) Thank you for this opportunity to solve my dilemma. Claude Tardif lui répond. 





Complex numbers 
19951022 

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

