







A product of 1 000 000 
20101119 

From Sharron: There are many pairs of numbers that when multiplied together give a product of 1 000 000. However, there is one pair, and only one pair, of whole numbers that contain no zero digits and has a product of 1 000 000. What are these two numbers? Answered by Stephen La Rocque. 





A number between 48 and 59 
20091007 

From nakia: I am a number less 59 but greater than 48. my ones digit is 2 more than my tens digit.What's the number? Answered by Penny Nom. 





Seven circles 
20090920 

From Bobbi: try to put number 1 to 7 in seven circles (one in the middle, 3 on top, 3 below) so the numbers in each row of three circlesvertical, horizontal, and diagonal  add up to 12. Each number can be used only once. Answered by Stephen La Rocque. 





What is my number? 
20090918 

From Hanna: What is my number?
My number is a perfect square.
The only number in its prime factorization is 2.
My number is a factor of 32.
The sum of its digits is odd. Answered by Penny Nom. 





You have the numbers 1 through 8, ... 
20090615 

From Maryland: You have the numbers 1 through 8, you can only use each number one time. Two of the numbers are multiplied together, two are subtracted, two more are subtracted and the last two are subtracted. All the answers are the same.
Can't get it, I have racked my brain trying to help. Answered by Claude Tardif. 





A number puzzle 
20090415 

From Julie: Hi, please help me!!! I have a subtraction puzzle...
5 digits minus 4 digits = 33333
Only using numbers 19 once each.
I can get 33323 but then thats it!!! Please how do I work it out?
There must be a simple way??
Thankyou Answered by Claude Tardif. 





The resulting number is the square of an integer 
20090130 

From Randy: A positive integer n is chosen. Then the product n ( n + 1 )
is computed and two digits are appended to the end of the product. The
resulting number is the square of an integer.
Show that it is always possible to complete the process above or give a
positive integer n for which the process cannot be completed. Answered by Chris Fisher and Claude Tardif. 





100 from four 9's 
20020327 

From A student: My teacher gave us a math problem to try and figure out and I am stumped. The problem was this.... by only using four nines, how can you get an answer of 100? You can add, subtract, multiply or divide...anything you need to do ,but you can only use four nines. Answered by Leeanne Boehm. 





What number am I? 
20020303 

From Samantha: I am an even number that has more ones than tens. My thousands digit is the quotient of 9 divided by 3 and my tens digit is the sum of 3 and 3. I have no hundreds. What number am I?......Please answer this for me...The answer I come up with is 3,060...Is this right?.. Answered by Penny Nom. 





How do you get to 100 by using 6 nines? 
20011117 

From A student: How do you get to 100 by using 6 nines? Answered by Claude Tardif. 

