The process of checking whether a number is divisible by a given number or not without actual division is called divisibility rule for that number
Divisibility rules for 2 :
A number is divisible by 2 if it has any of the digits 0,2,4,6 or 8 in it's ones place
Ex : 34 ( Yes), 25( No )
Divisibility rules for 3 :
If the sum of the digits is a multiple of 3, then the number is divisible by 3.
Ex : 32 = 3+2=5 (Not Divisible)
513 =5+1+3 =9 (Divisible)
2538 = 2+5+3+8=18 ( Divisible)
Divisibility rules for 4 :
If the last two digits are divisible by 4
Ex : 729 ( Not divisible)
336 ( Divisible)
1716 ( Divisible )
Divisibility rules for 5 :
All the numbers with zero and five at ones place is divisible by 5
Ex : 40, 95, 150,235
Divisibility rules for 6 :
If it is divisible both 2 and 3 then it is by 6 .
Ex : 24. 30, 48
Divisibility rules for 9 :
If the sum of the digits is a multiple of 9, then the number is divisible by 9.
Ex : 79, 513, 2538
Divisibility rules for 10 :
All the numbers with zero at ones place is divisible by 10
Ex : 20,50,100,150