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What are the common multiples of 20?

What are the common multiples of 20?

The multiples of 20 are 20, 40, 60, 80, 100, 120, 140 and so on. The multiples of 10 are 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 and so on. The common multiples of 20 and 10 are 20, 40, 60, 80,100 and so on.

What are the common multiples of 7?

First Method: Listing the multiples Common Multiples of 7: 7,14,21,28,35,42,49,56,63,70…

What is the least common multiple of 7 20 and 5?

140
The least common multiple of 5, 7 and 20 is 140.

What is the least common multiple of 7 20 and 10?

Calculate the LCM The least common multiple of 7, 10 and 20 is 140.

What are factors of 20?

Hence, the factors of 20 are 1, 2, 4, 5, 10, and 20. Important Notes: Factors of a number are all the possible numbers it is divisible by. They may be prime numbers or composite numbers.

Is 20 a multiple of3?

3, 6, 9, 12, 15, 18, 21, 24, 27, 30, … 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, …

What is the average of the first 20 multiples of 7?

73.5
Now, to find the average we divide sum by total number of terms i.e. 20. Hence, the average of the first 20 multiples of 7 is 73.5.

How do you find common multiples?

We can find the common multiples of two or more numbers by listing the multiples of each number and then finding their common multiples. For example, to find the common multiples of 3 and 4, we list their multiples and then find their common multiples. Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36.

How do you find least common multiple?

Find the least common multiple (LCM) of two numbers by listing multiples

  1. List the first several multiples of each number.
  2. Look for multiples common to both lists.
  3. Look for the smallest number that is common to both lists.
  4. This number is the LCM.

What is a common multiple of 7 and 10?

70
The LCM of 7 and 10 is 70. To find the LCM (least common multiple) of 7 and 10, we need to find the multiples of 7 and 10 (multiples of 7 = 7, 14, 21, 28 . . . . 70; multiples of 10 = 10, 20, 30, 40 . . . .

What is the smallest multiple of 7 that has a factor of 20?

Step 3: The smallest common multiple of 7 and 20 is 140.

How many factors does 7 have?

two factors
Factors of 7 are 1 and 7. The number 7 has only two factors, and hence it is a prime number.