divisibility rule

This topic has expert replies
User avatar
Senior | Next Rank: 100 Posts
Posts: 90
Joined: Fri Jan 22, 2010 1:10 pm
Location: New Jersey
Thanked: 13 times
Followed by:4 members
GMAT Score:640

divisibility rule

by Mom4MBA » Wed Feb 24, 2010 2:34 pm
The number aaaaaa, where 'a' is a single digit natural number not equal to 0, is divisible by
a. 11
b. 13
c. 143
d. all of these

Answer: d

How do u know whether a number is divisible by 13 ?
Stay focused
Source: — Problem Solving |

Junior | Next Rank: 30 Posts
Posts: 27
Joined: Sat Feb 06, 2010 1:55 pm
Thanked: 5 times

by DeepthiRajan » Wed Feb 24, 2010 3:23 pm
Six digit numbers where all the digits are same will be divisible by 13.

User avatar
Senior | Next Rank: 100 Posts
Posts: 90
Joined: Fri Jan 22, 2010 1:10 pm
Location: New Jersey
Thanked: 13 times
Followed by:4 members
GMAT Score:640

by Mom4MBA » Wed Feb 24, 2010 8:45 pm
thanks Deepthi...... :)
Stay focused