Home > Numbers
A Quicky III (Posted on 20140409) 

If each of the a,b,c,d is a decimal digit  for how many ordered quadruplets (a,b,c,d) is
the sum S= a+b+6c+d divisible by 3 ?
Answer: within 20 sec.
No Solution Yet

Submitted by Ady TZIDON

Rating: 5.0000 (1 votes)


Comments: (
You must be logged in to post comments.)


Please log in:
Forums (0)
Newest Problems
Random Problem
FAQ 
About This Site
Site Statistics
New Comments (4)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On
Chatterbox:
