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Common Multiples

Common Multiples. Ex) Find the common multiples of 3 and 4. Sol) Multiples of 3 = 3,6,9,12,15,18,21,24,27,30,33………… Multiples of 4 = 4,8,12,16,20,24,28,32,36…………….. Common multiples of 3 and 4 are. Ex) Find the common factors of 12 and 18.

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Common Multiples

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  1. Common Multiples Ex) Find the common multiples of 3 and 4. Sol) Multiples of 3 = 3,6,9,12,15,18,21,24,27,30,33………… Multiples of 4 = 4,8,12,16,20,24,28,32,36…………….. Common multiples of 3 and 4 are

  2. Ex) Find the common factors of 12 and 18. Sol) Factors of 12 = 1,2,3,4,6, and 12 Factors of 18 = 1,2,3,6,9, and 18.

  3. Co-Prime Numbers • Two numbers are said to be co-prime, If they do not have any common factors other than ‘1’ • (It is not necessary to be either of them to be prime numbers. • That is either one or both may be composite numbers)

  4. A number is divisible by both 2 and 3. By what other numbers will that number be divisible ?

  5. A number is divisible by 15. By what other numbers will that number be always divisible ?

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