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If the sum of all the digits is divisible by 9, then the entire number is divisible by 9! For example: 9,728,127 is divisible by 9. 9+7+2+8+1+2+7=36, and I know 36 is divisible by 9. Therefore, the whole number is. 982 is not. 9+2+8=19. 19 is not divisible by 9.
Works for really huge numbers too. 3,456,245,190,769,984,245,865,992,831 The sum of the digits is 144. Unsure if that works? Find the sum of THOSE digits (and keep doing that until you get something that you KNOW is divisible by 9). 1+4+4=9. That means the whole huge number is divisible by 9!
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∙ 14y ago
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What divisibility rules were combined to make the divisibility rule of 36?
The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.
Divisibility rule of 2345678910?
it is divisible by 3 and 9
What is the rule for divisibility of 3?
It is 3 6 9
Do multiples of 9 add up to 9?
Yes. It is the divisibility rule for 9.
What are the divisablity rules?
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 divisibility rule for 99?
Its digital sum is 9 so it is divisible by 9
Divisibility rule for 9?
If the digit sum of a number adds up to 9 then it is divisible by 9.
What is the divisibility rule of 18?
It is even and the sum of its digits is divisible by 9.
What is the divisibility rule for 34?
There is no easy rule for divisibility by 34.
What divisibility rule can go into 36?
9 because the digits of 36 add up to 9
What is the divisibility rule for 63?
Its digits add up to 9 so therefore it is divisible by 9
Why does divisibility rule for 6 work?
By tautology. If it did not work, it would not be a divisibility rule!
