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What number whose digits add up to 6 has one factor that is 3 but does not have a factor that is 5?
Wiki User
∙ 14y ago
Since 5 is not a factor, it cannot be 15, whose digits add up to 6. The easiest way is to look at the multiples of 3.
3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, ... , 102, 105, 108, 111, 114, 117, 120, 123, 126, 129, 132, 135, 138, 141, 144, 147, 150, ... , 201, 204, 207, 210, 213, 216, 219, 222, 225, 228, 231, ... , 300, 303, 306, 309, 312, 315, 318, 321, ... , 402, 405, 408, 411, ... , 501, 504, 507, 510, ... , 1002, 1005, 1008, 1011, 1014, 1017, 1020, 1023, ...
Other numbers whose digits add up to 6 are 24, 33, 42, 51, 60, 105, 114, 123, 132, 141, 150, 204, 213, 222, 231, 303, 312, 321, 402, 411, 501, 510, 1005, 1014, and 1023. Some of these have 5 as a factor, so you must eliminate 60, 105, 150, 510, and 1005, but there are still many numbers that fit this condition, and there are more that were not listed here.
If the number has only four factors, 1, 3, the one that is not 5, and itself, that eliminates more of the possible answers. Some of the remaining possibilities are:
33 = 3 x 11
51 = 3 x 17
123 = 3 x 41
141 = 3 x 47
213 = 3 x 71
Wiki User
∙ 14y ago
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What number is a factor of any number whose digits add up to 3 or a multiple of 3?
Three is.
What is the smallest 4 digit number whose digits add up to 18?
22
Which numbers are not divisible by 9?
The divisibility test for the number 9 is: Any number whose digits add up to 9 or a multiple of 9, is divisible by 9. Any other number the sum of whose digits do not add up to 9 or a multiple of 9, are not divisible by 9.For example, the digits of 81 sum up to 9, and therefore, 81 is divisible by 9. The digits of the number 319381482 add up to 39, and therefore, 319381482 is divisible by 9.
A three digit number whose digits add up to 900?
Three digits can't possibly add up to 900. The largest possible sum of 3 digits is (9 + 9 + 9) = 27.
Are all numbers divisible by 9 divisible by 3?
A number is divisible by 9 if all the digits add up to 9 or are a factor of. IF the digits add up to 9 (or a factor of 9), they will automatically be a factor of 3.Yes. Test a couple numbers divisible by 9--27, 81--and they are all divisible by 3.
What number is a factor of any number whose digits add up to 3 or a multiple of 3?
Three is.
What is true if 9 is a factor?
The sum of the digits of the number will add to a number that's divisible by nine. For example, 99 -> 9+9 -> 18. 18 is divisible by nine, thus 99 is. Any whole number that's divisible by nine will have its digits add up like this, and any whole number whose digits add up like this will be divisible by nine.
Name a 2 digit factor of 11 whose digits add up to 12?
66
I am Smallest prime number whose digits add to 8 what am i?
17
The number has two digits the number is less than fifty the number can be evenly divided by two the sum of the number's digits is 9?
Answer 18. The two digit numbers less than 50 whose digits add to 9 are 45, 36, 27 and 18. 36 and 18 are even. 36 is the only number whose paired factor with 2 is even (18).
What is the largest three digit number whose digits add to 20?
992
What is the number that is odd it is not a square number has a factor of 3 it is composite the digits add up to 6 and the digits are not the same?
9
What 2-digit prime number has a sum of 10 when you add up its digits?
Two-digit prime numbers whose digits add up to 10 are:193773
What is a two digit prime number whose digits add up to 13?
67
What is the smallest 4 digit number whose digits add up to 18?
22
What is a two digit multiple of 5 whose digits add up to 13?
The number is 85.
Which numbers are not divisible by 9?
The divisibility test for the number 9 is: Any number whose digits add up to 9 or a multiple of 9, is divisible by 9. Any other number the sum of whose digits do not add up to 9 or a multiple of 9, are not divisible by 9.For example, the digits of 81 sum up to 9, and therefore, 81 is divisible by 9. The digits of the number 319381482 add up to 39, and therefore, 319381482 is divisible by 9.
