Divisibility Rule

Divisibility Rule

Divisibility by 2: If the last digit of a number is even (0, 2, 4, 6, 8), then the number is divisible by 2.

Divisibility by 3: A number is divisible by 3 if the sum of its digits is divisible by 3.

Divisibility by 4: If the last two digits of a number form a number that is divisible by 4, then the original number is also divisible by 4.

Divisibility by 5: If the last digit of a number is either 0 or 5, then the number is divisible by 5.

Divisibility by 6: A number is divisible by both 2 and 3 if it satisfies both divisibility rules for 2 and 3.

Divisibility by 7: There is no simple rule for divisibility by 7, but there are methods like the "subtract twice the units digit from the rest" rule or memorization of multiples of 7.

Divisibility by 8: If the last three digits of a number form a number that is divisible by 8, then the original number is also divisible by 8.

Divisibility by 9: A number is divisible by 9 if the sum of its digits is divisible by 9.

Divisibility by 10: If the number ends with 0, it is divisible by 10.

Divisibility by 11: Subtract the units digit from the rest of the number, and if the result is divisible by 11, then the original number is also divisible by 11.

LCM OF 2,3,4 = 12, 67284, 583726

LCM OF 2 to 11 = 27720