Tue 2 Nov, 2004 03:23 pm - There are pencils in the box: 10 red ones, 8 blue, 8 green, 4 yellow. Let us take, with eyes closed, some number of pencils from the box. What is the least number of pencils we have to take in... (view)
Sat 8 Nov, 2003 02:48 pm - How many people must be choosed at least? for let 4 people born at the same day surely.[can you explaine the solving]
I found 29= [4*7+1] but could not explaine the logic] (view)
