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CBSE Class 11-science Answered

how can u you say that 1 does not belong to the set of prime numbers?
Asked by | 29 Jun, 2011, 12:00: AM
Expert Answer
A number is said to be prime if it has exectly two factors one and itself.
But 1 has only one factor and that is 1.
So 1 is not a prime number.
Answered by | 29 Jun, 2011, 11:29: AM
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