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The question wants to know the least common multiple of 4 and 12. The way to do this is to find the prime factors of these numbers. In this case:

4=2x2

12=2x2x3

The next step is to find any common factors and discard the duplicate. Both numbers have two 2s, so we can discard 2 of these. That leaves us with 2, 2 and 3. Multiply these to give the LCF:

2x2x3=12

Thus 12 is the smallest number that has both 4 and 12 as a factor.

Q: How do you find the smallest number that has both 4 and 12 as a factor?

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Prime numbers, raised to a power, have one more factor than their exponents. The smallest prime number is 2. 210 has eleven factors. 210 = 1024

To find the least common denominator, you simply find the smallest number that can divide into both 50 and 60. So 5 is the smallest number that will divide into 50 and 60. The answer is 5

Suppose you have a number N and you want to find its largest prime factor. It is probably easiest to start at the bottom.Find the smallest prime factor, p.Find its factor pair = N/p.If the second number (= N/p) is a prime, then it is the largest prime factor.if not, replace N by N/p and go back to the top.

Factor, in maths terms means "a number that divides into a given number with no remainders". You may be asked to find the "highest common factor" that two number share - this is the "biggest number that divides into both the given numbers, with no remainders".

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The smallest factor is always 1.

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The greatest common factor is the largest number that is evenly divisible by both numbers, so if you divide both numerator and denominator by GCF, the numerator and denominator will be the smallest integers possible, and still be an equivalent fraction.

Prime numbers, raised to a power, have one more factor than their exponents. The smallest prime number is 2. 210 has eleven factors. 210 = 1024

To find the least common denominator, you simply find the smallest number that can divide into both 50 and 60. So 5 is the smallest number that will divide into 50 and 60. The answer is 5

To find a common factor, you need another number to have common (shared) factor with. However, with any set of numbers, the Least Common FACTOR (the smallest (positive) whole number which divides into each of the numbers without any remainder) will always be 1.

Suppose you have a number N and you want to find its largest prime factor. It is probably easiest to start at the bottom.Find the smallest prime factor, p.Find its factor pair = N/p.If the second number (= N/p) is a prime, then it is the largest prime factor.if not, replace N by N/p and go back to the top.

Prime numbers, raised to a power, have one more factor than their exponents. The smallest prime number is 2. 210 has eleven factors. 210 = 1024

You can't find the greatest common factor of 850 unless you have another number with it... For example: What is the greatest common factor of 850 and 425? Then, the answer would be: 425, since 425*2=850.The smallest factor of 850 is 1, but you need at least two numbers to find a GCF.

A factor is a number which, when multiplied by another number, produces a given number.... 5 is a factor of 20A common factor is a number which is a factor of two or more given numbers.... 2 is a common factor of 20 and 60.The greatest common factor is the largest number which is common to two or more given numbers - so while 2 and 3 and 5 are the factors of 30, and 2 and 3 and 7 are the factors of 42..... the greatest common factor of 30 and 42 is 6 (which is 2 x 3).The GCF can be no larger than the smallest number given in the problem. If no other numbers is a common factor, then the GCF will be the number 1. For example: Find the GCF of 12, 20, and 36. The smallest number in the problem is 12. The factors of 12 are 1, 2, 3, 4, 6, and 12. 12 is the largest factor, but it does not divide evenly into 20. Neither does 6, but 4 will divide into both 20 and 36 evenly. Therefore 4 is the GCF. Find the GCF of 12 and 13. Factors of 12 are 1, 2, 3, 4, 6, and 12. 12 is the largest factor, but it does not divide evenly into 13. neither does 6, 4, 3, and 2. Therefore the only factor common to both 12 and 13 is the number 1, the GCF.

Factor, in maths terms means "a number that divides into a given number with no remainders". You may be asked to find the "highest common factor" that two number share - this is the "biggest number that divides into both the given numbers, with no remainders".

The smallest number that is divisible by 18 and 48 is 144.