3 is a factor of 21 and it is not a multiple of 7.
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Don't know
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2 is a factor of 14 but not a multiple of 7.
The LCM of 7 and 21 is 21. Since 7 is a factor of 21, the LCM is automatically 21.21 is.
The GCF of 21, 35, and 49 is 7.The GCF is 7.Factors of 21: 1, 3, 7, 21Factors of 35: 1, 5, 7, 35Factors of 49: 1, 7, 49GCF (21, 35, 49) = 7
The GCF of 7 and 21 is 7. Since 7 is a factor of 21, it is automatically the GCF.Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 7 are 1 and 7.The factors of 21 are 1, 3, 7, and 21..The common factors are 1 and 7. Therefore, the greatest common factor is 7.The GCF is 7.
7 is a prime number so it has to be 7 and 1
The factors of 21 are 1, 3, 7, 21. The factors which are not a multiple of 7 are 1 and 3.
7
21 has 3 as a factor and is a multiple of 7, and so as 210, 105, and an infinite number of other numbers.
3 and 7 or 1 and 21 or 3 and 21 or 7 and 21. 21 and any factor of 21.
21 or 35
No, 7 is a factor of them.
The only number that could be both a factor and a multiple is 7 itself.
2 is a factor of 14 but not a multiple of 7.
The greatest common multiple of any set of integers is infinite.--------------------------------------------------------------------------------------------------------Did you perhaps mean:the greatest common FACTOR (the greatest number which divides into 14 and 21 without remainder): gcf(14, 21) = 7;the LOWEST common multiple (the smallest number which is a positive multiple of both 14 and 21): lcm(14, 21) = 42
you would have to make a factor tree for 8, 14, and 21. 8 equals 2*2*2. 14 equals 7*2 and 21 equals 7*3. Then you have to see what is the lowest number that they have in common. 8,14,21 do not have a number in commone so there isn't a common multiple.
d. 3
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