Factors, Multiples, and Co-Prime Numbers
Concept of factors, multiples, and co-prime numbers through examples and visuals. Discover how numbers interact with each other, including common multiples and factors, and what it means to be co-prime. Learn about divisibility rules and identify numbers that are divisible by specific factors.
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Presentation Transcript
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. Sol) Factors of 12 = 1,2,3,4,6, and 12 Factors of 18 = 1,2,3,6,9, and 18.
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)
A number is divisible by both 2 and 3. By what other numbers will that number be divisible ?
A number is divisible by 15. By what other numbers will that number be always divisible ?
