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Standard IV
Mathematics
Prime and Composite Numbers
Which of the ...
Question
Which of the following is a prime number?
A
9
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B
15
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C
7
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D
21
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Solution
The correct option is
C
7
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Q.
Which of the following is a prime number?
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Consider the following statements:
A. The sum of two prime numbers is a prime number.
B. The product of two prime numbers is a prime number.
Which of these statements is/are correct ?
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If
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Which of the following number is a prime?
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Which of the following statements are true?
(i) 1 is the smallest prime number.
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(iv) If two numbers are co-primes, at least one of them must be a prime number.
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