this video explain shortcut method or divisibility rule to check given big number is divisible by 3
How can we quickly tell if a number is divisible by 3 without performing the division?
A number is divisible by 3 only when the sum of its digits is divisible by 3
the shortcut is useful for almost every competitive exams like bank PO , SBI-PO , MAT , CMAT , MBA , GMAT , IBPS , RBI , SSC , UPSC , Railways recruitment board and campus recruitment tests
other videos:
Rational numbers with reduced form in hindi by Classmath – https://youtu.be/x2m94J8j-Iw
What is a Norm ? in HINDI/ by ClassMATH – https://youtu.be/u3gomuEBx30
by ClassMATH
source
