Posted by Kim on Wednesday, September 7, 2011 at 4:42pm.
the mystery number is a two didget even number.it is a multiple os 2,4,5,and 10 but not a multiple os 3 or 7. If you count by sixes there will be two left iver. What is rhe mystery number. Please explaine how you figured it out.

Mystery number  Ms. Sue, Wednesday, September 7, 2011 at 4:46pm
Didn't you like my answer from yesterday?
http://www.jiskha.com/display.cgi?id=1315347315
I started my thinking process by finding the smallest multiple of 2, 4, 5, and 10. See the above linked post for the rest of my answer. 
Mystery number  Ms. Sue, Wednesday, September 7, 2011 at 5:01pm
20 divided by 6 = 3 with a remainder of 2.

3 tens and 15 ones  three, Tuesday, March 18, 2014 at 10:05pm
my mystery number has 3 tens and 15 ones. What number am I thinking of?

Mystery number  Anonymous, Wednesday, February 24, 2016 at 3:15am
it is less than 50 it is a square number the sum of the digits is 13