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Define Real number, Primes number, Co-prime, …

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Define Real number, Primes number, Co-prime, Composite number. Explain with the help of examples.

    • Posted by Amit Patle 6 years, 8 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Yogita Ingle 6 years, 8 months ago

    A natural number which has exactly two factors, i.e.  1 and the number itself, is a prime number. For example:  2, 3, 5, 7, 11, 19, 37, 41, 313, 241 etc.

    Every non-prime number is a composite number. Composite numbers are those natural numbers which have more than two factors. Such numbers are divisible by other numbers as well. For example:  4, 6, 8, 10, 12, 14, 500, 6000  etc.
    Numbers, which do not have any common factor between them other than one, are called co-prime numbers. For example 16 and 25 do not have any common factor other than one. Similarly 84 and 65 do not have any common factor and are hence co-prime.
    All rational and all irrational number makes the collection of real numbers. It is denoted by the letter R . For example: 1, -2/3, 3/4, √2, √2 + 5

     

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