because when we simplify fractions it will give you the correct answer and that is the rule.
By using the divisibility rule for 3, we find that 117 is divisible by 3. That makes it composite.
There is no easy rule for divisibility by 34.
The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.
By tautology. If it did not work, it would not be a divisibility rule!
why does the divisibility rule work for 4
the divisibility rule for 2 is: The number is even;the last digit ends with a 2,4,6,8,10, etc.The divisibility rule fir 3 is: The sum of the number is divisible by 3The divisibility rule for 4 is: The last two digits are divisible by 4The divisibility rule for 5 is: The number ends with a 5 or 0The divisibility rule for 6 is: The sum CAN be divisible by 2 and or 3The divisibility rule for 9 is: The sum of the number is divisible by 9The divisibility rule for 10 is : The number ends with a 0
What is the divisblity rule by 8
1, 2, 4 and 47
1, 2, 3 and 4
2 x 7 x 7 = 98
The divisibility rule for 2 works because the base of our number system, 10, is divisible by 2.