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What number is greater than 25 that has more factors than 19 21 23 and 25?
which of the numbers 19 21 23 and 25 has the most factors
What numbers would be in a factor tree for 21?
Its factors are: 1 3 7 and 21 Note that 3 and 7 are prime numbers
What numbers have 3 and 7 as common factors?
21 and 28 have 7 as a factor.
What number do 12 21 and 63 have in common?
The only common factor of all three numbers is 3. (The numbers 21 and 63 share all of the factors of 21 : 1, 3, 7, and 21.)
What is the greatest common factor of 75 54 and 96?
One way to approach this is to look at the differences between the numbers. The difference between 54 and 75 is 21. The difference between 75 and 96 is 21. The greatest common factor cannot be larger than the smaller difference between the numbers and must be a factor of the difference. The factors of 21 are 1, 3, 7, and 21. The numbers are not divisible by 21, so try the next largest factor. The numbers are not divisible by 7, so try the next largest factor. The numbers are divisible by 3, so the greatest common factor is 3. Another way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 54 are 1, 2, 3, 6, 9, 18, 27, and 54. The factors of 75 are 1, 3, 5, 15, 25, and 75. The factors of 96 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, and 96. The common factors are 1 and 3. Therefore, the greatest common factor is 3. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 54 are 2, 3, 3, and 3. The prime factors of 75 are 3, 5, and 5. The prime factors of 96 are 2, 2, 2, 2, 2, and 3. The prime factors in common are a single 3, so the greatest common factor is 3.
