Topic: 7 list of topics
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	A puzzle with a triangle and 57		2012-04-25
		From sharon: Question from sharon, a parent: We have been battling with this for days and cant find any solution - Using each of the following numbers once, fill all the spaces in the triangles so that each side of the triangle adds up to 57 numbers are 11,12,13,14,15,16,17,18,19 diagram is -       0           0   0       0   57   0   0   0   0   0   Any ideas ? this has to be in in just over 24 hrs ......help! Answered by Chris Fisher.
	Golf for 17		2012-03-29
		From Richard: Hi Guys, I have a scheduling problem which I don't think you have covered before. Apologies if you have! I have 17 golfers due to play 4 rounds of golf. Each round will consist of 3 threeballs and 2 fourballs (ie. 17 golfers in 5 groups)! Is it possible to come up with a schedule where each golfer plays with different partners in each round? Answered by Robert Dawson.
	A golf holiday		2011-01-04
		From Andy: You kindly responded to a question I previously sent with regard to a Golf Holiday and I wonder if I might ask another question please. There are now 7 players playing 5 rounds of golf and I wonder if it is possible to devise a schedule where everyone plays with each other a minimum of two times i.e. they will play twice with some and three times with others. As always, many thanks for your kind assistance. Answered by Victoria West.
	6 rounds of golf		2010-11-29
		From Andy: I wonder if you are able to assist me with scheduling pairings for a forthcoming Golf Tournament ? There are 7 players and we will be playing 6 rounds - each round will be a 3 ball and a 4 ball. I am trying to work out a schedule that means everyone plays with each other roughly the same number of times. Also, we are looking to ensure everyone plays in roughly the same number of 3 and 4 balls. Any suggestions would be much appreciated - thank you. Answered by Chris Fisher.
	The difference of the two numbers		2010-02-15
		From Steve: The difference of the two numbers 'abcdef ' and ' fdebca ' is divisible by 271. prove that b = d and c = e. Answered by Claude Tardif.
	Holiday for 7 golfers		2010-01-05
		From Andy: I am having difficulty scheduling pairings for a forthcoming Golf holiday. There are 7 players and we will be playing 7 rounds - each round will be a 3 ball and a 4 ball. I am trying to work out a schedule that means everyone plays with each other roughly the same number of times (with a minimum of, say, 3 times if possible). Also, we are looking to ensure everyone plays in roughly the same number of 3 and 4 balls. Any suggestions would be much appreciated (we leave in 10 days time). Thank you. Answered by Victoria West.
	Sandra's age		2009-09-24
		From cindy: Sandra is more than 20 years old and less than 60 years old. You can count by 7's to reach Sandra's age. Next year you will be able to count by 5's to reach Sandra's age. How old is Sandra? Answered by Penny Nom.
	A base 7 number and a base 9 number		2009-07-09
		From koteawarao: Find a base 7 three-digit number which has its digits reversed when expressed in base 9. ans: (281) base 7 and (182) base 9 Answered by Harley Weston.
	7 digit combinations		2009-05-11
		From CAROL: I NEED TO KNOW HOW MANY 7 DIGIT COMBINATIONS FROM 0-9 THERE ARE WITHOUT ANY REPEATES, OR WHAT THOSE COMBINATIONS ARE? Answered by Penny Nom.
	0123456789		2009-03-25
		From Dr.: Many years ago I discovered that there are 33 numbers which, when multiplied by 0123456789, simply rearrange the digits. Surprisingly (to me at least) is the fact that the digits of all of those 33 numbers add up to one of the 6 "cardinal" numbers 1, 2, 4, 5, 7, and 8. For example 6 + 2 = 8 and 62 X 0123456789 = 7654320918 etc. Another interesting (to me) fact is that only the cardinal numbers 1, 2, 4, 5, 7, and 8 rearrange the digits in the number 9876543210. My question is: "Is this known to anyone but me and the people I have told?" Answered by Robert Dawson.
	7 golfers playing 4 days of golf		2009-01-30
		From Trish: 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. Answered by Victoria West.
	Ambitious 7th Grader		2009-01-28
		From John: I have been asked to tutor a 7th grader who is very good in math. He is taking the most advanced course that his school offers to 7th graders. This course will cover Algebra 1 over a period of two years, using McDougal Littell's Algebra, Structure and Method, Book 1, a book I like a lot. I have been hired not to help him with his schoolwork, which is too easy for him, but to guide him through something in math beyond his schoolwork. This was his idea, an idea which surprised his parents, but one which they support. Do you have a suggestion for me? If so, I would be very grateful to hear from you. I think this could be a lot of fun for me and my new student, if I pick the right path. Thanks and best regards, John John Answered by Robert Dawson, Victoria West and Walter Whiteley.
	Arrays of 72 marbles		2008-11-13
		From natalie: draw four possible arrays for 72 marbles Answered by Penny Nom.
	A 7-digit odd number		2008-06-26
		From Godryk: I am the smallest 7-digit odd number. my ones digit is the sum of my thousands, and ten thousands digits. What number am I? Answered by Penny Nom.
	How many combinations of 8614 are divisible by 7?		2008-01-22
		From Rebecca: How many combinations of 8614 are divisible by 7 equally (with no remainder)? Answered by Penny Nom.
	Base seven		2007-05-19
		From Dan: A number X is converted to base 7 and becomes a four digit number. Its leftmost digit is removed and written again as the rightmost digit. The number thus obtained is twice X. Find the decimal representations of all such numbers X. Answered by Penny Nom.
	A 3-digit number in base 7 has its digits reversed when expressed in base 9.		2007-01-28
		From Ashley: A 3-digit number in base 7 has its digits reversed when expressed in base 9. Find this number. Answered by Penny Nom.
	Divisibility by 7 and 11		2004-10-13
		From Tammy: I'm stuck in class in Yr 7 And I'm finding it hard on our new topic Divisibility! When I try to find out what this means on Internet sites i can not understand the used symbols like algebra and so on. I'm stuck on the divisibility rules for the number 11! Answered by Penny.
	Digits in the decimal expansion		2004-02-11
		From Leslie: In the decimal expansion of 1/17 what digit is in the 1997th place? Answered by Penny Nom.
	37 with four 4'2		2004-01-03
		From Myra: Using four fours and only four fours to get an answer of 37. Answered by Claude Tardif.
	Divisibility by 7		2003-11-14
		From A student: how do you test a number to see if it is divisible by 7 or not? Answered by Penny Nom.
	The units digit of 57 to the 28th power		2003-09-01
		From Maria: If 57 is raised to the 28th power, what must be the units digit in the result? If you raise 7 to the 500th power, what is the numeral that will appear in the units digit position? Answered by Penny Nom.
	Making 7		2002-11-26
		From Bill: At one time I had the answer to this math equation but I have lost it and can't seem to regain it. I may be going at it wrong but as I recall there were the numbers 1 through 4, and the std operators, +, -, /, *, and parentheses. The object was to make the four numbers with the operators equal to 7. Each number and operator may be used only once. My 9 year old loves these quizzes but I can't give it to her if I can't provide the correct answer. Answered by Claude Tardif.
	27		2001-09-10
		From Kacy: In class we were given this problem. We have the numbers 30, 29, 19,11,26. these numbers = 27 in some way but how? the numbers can be applied any way using + - / X ( ) but can only be used 1 time each. can you please help me. Answered by Claude Tardif.
	The best of 7		2001-09-08
		From Michelle: Professional basketball, hockey, and baseball championships are decided on the best 4 out of 7 games. The first team to win four games wins the championship. In how many possible ways could the team win the championship series after winning the first game? Example: Game 1 2 3 4 5 6 7 Result W L L W W W Answered by Leeanne Boehm.
	1234567890		2000-09-14
		From Bradley Kloetzly: Can you find two whole numbers, with the smallest possible difference between them, which when multipled together equal: 1234567890? Answered by Harley Weston.
	Rule of 78		2000-03-22
		From Dan Baumgarten: Can you explain the rule of 78 and the reverse rule of 78? Thanks. Answered by Claude Tardif.
	Root 17 is Irrational		1999-01-21
		From John Murdock: If you could help me out with this I would appreciate it. Prove that the square root of 17 is irrational. Answered by Harley Weston.

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