November 26th, 2002, 01:03 PM
yea i noticed in one of the old posts that someone was lookin for help with math problems, the post was closed but i wanted to help out because i know how frustrating working math can be here's a good link that will work math problems as well as teach you how to solve the problem step by step... http://school.discovery.com/homeworkhelp/webmath/
Webmath offers math homework help and math word problems at DiscoverySchool.com.
November 27th, 2002, 06:51 PM
1)i) Select a number (Z) from 1 to 9
ii) Then Z x 9 = Y
iii) Then Y x 12345679 = ZZZZZZZZZZ
Find why every number will result to this.
2)i) Select a two-digits number (ZY)
ii) Then ZY x 101 = ZYZY
Find why every numbers will result to this.
Both of this, i learnt them from school.
November 27th, 2002, 11:41 PM
WARNING: IF YOU DON'T WANT TO KNOW THE ANSWERS STOP READING
For question 1:
Take the case Z = i
y = 9i
9i *123456789 = ZZZZZZZZZZ
9 * 123456789 * i = ZZZZZZZZZZ
1111111111 * i = ZZZZZZZZZZ
iiiiiiiii = ZZZZZZZZZZ
resusbstitute i = Z
ZZZZZZZZZZ = ZZZZZZZZZZ
A bit harder to show
If you use long multiplication from high school you will get
Each row will therefore be made of 0 Y 0 Y yada yada yada
Since the next row is always shifted left one place it will be X 0 X 0
This will ALWAYS produce X Y X Y.
This can even be extended to 10101 * XY = XYXYXY
Hopefully I didn't spoil anyone's fun by posting these answers (and hopefully they are correct as well!!)