Base system concept
In Quantitative Aptitude for CAT from Pearson by Nishit Sinha There is a concept related with the divisibility rule of 5 on base 6, and similarly the divisibility rules of other numbers on base other than 10. I do not understand this concept. Plz help how this is done.
I have not seen what exactly
I have not seen what exactly you are referring to but i would try to clarify, give me some time. But I would suggest you to stay away from these sort of concepts/short cuts Nishit Sinha is a good book , no doubt but that doesn't mean everything written there are worth reading not at least in CAT point of view. In last 5 years there might be 2/3 questions on base system and to solve them you don't need to remember the divisibility rule of numbers in all the base system. If you know the rules of base 10, you can always convert the number to base 10 and chk the divisibility. Trying to remembering too much tricks/short cuts some times can go against you. Just a suggestion, few might disagree.