Question

shortcut to solve number system​

Answer 1

Answer:

Classification.

Divisibility.

Division & Remainder Rules. A very basic formula for division rules is: dividend = ( divisor✘quotient ) + remainder. or. ...

Sum Rules: • Sum of first n natural numbers= n(n+1)/2. • Sum of square of first n natural numbers= n(n+1)(2n+1)/6.