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Is 405 divisible buy 3 or 9?
Yes, 405 is divisible by 1, 3 , 5, 9 , 15, 27, 45, 81, 135, 405.
What is the prime factorization using divisibility rules for 1215?
1215 is divisible by 3 because its digits add up to a multiple of 3. That leaves 405. 405 is divisible by 3, leaving 135. 135 is divisible by 3, leaving 45. 45 is divisible by 3, leaving 15. 15 is divisible by 3, leaving 5. 5 is divisible by 5 because it ends in 5. 3 x 3 x 3 x 3 x 3 x 5 = 1215
Is 900 divisible by and 6?
Multiples of 9 and 6 are also divisible by three, the reverse is not true. 15 is divisible by 3, but not 6 or 9. 27 is divisible by 3 and 9, but not 6. 12 is divisible by 3 and 6, but not 9. 54 is divisible by 3, 6 and 9.
Is 78 divisible by 6 and 9?
Using the tests for divisibility:Divisible by 3:Add the digits and if the sum is divisible by 3, so is the original number: 6 + 8 + 4 = 18 which is divisible by 3, so 684 is divisible by 3Divisible by 6:Number is divisible by 2 and 3: Divisible by 2:If the number is even (last digit divisible by 2), then the whole number is divisible by 2. 684 is even so 684 is divisible by 2.Divisible by 3:Already shown above to be divisible by 3. 684 is divisible by both 2 & 3 so 684 is divisible by 6Divisible by 9:Add the digits and if the sum is divisible by 9, so is the original number: 6 + 8 + 4 = 18 which is divisible by 9, so 684 is divisible by 9Thus 684 is divisible by all 3, 6 & 9.
What numbers are divisible by 135?
Numbers such as 135, 270, 405, and other multiples of 135.
