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प्रश्न
Which of the following numbers is co-prime?
30 and 415
उत्तर
Factors of 30 = 1, 2, 3, 5, 6, 10, 15, 30
Factors of 415 = 1, 5, 83, 415
We know that two numbers whose common factor is only 1 are called co-prime numbers.
The common factors of 30 and 415 are 1 and 5.
That is, it has two common factors, hence these are not co-prime numbers.
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