First of all we should remember some key points to solve number systems questions in banking & other competitive exams. These key points are prepare all the basic concepts like classifications of number system, divisibility rules ,
bodmas rule, LCM HCF , and all .
Then we should start practise to solve the questions but in this chapter the main problem creates the complex calculations of two , three and four digits numbers.
In general many exams are avoid to ask over complex digit numbers calculations so we need to only practise for maximum 4 and 5 digit numbers calculations.
For this we should have to learn tables minimum from 1 to 25 & squares , cubes & its roots .
Then we can solve the questions of this chapter very easily and we get selected for job.
