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प्रश्न
Which of the following is a prime number?
पर्याय
323
361
263
none of these
उत्तर
263
323 is not a prime number because 323 can be written as 17 × 19.
361 is not a prime number because 361 can be written as 19 × 19.
263 is a prime number.
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संबंधित प्रश्न
Write all the prime numbers between:
40 and 80
What are twin primes?
Write all the pairs of twin primes between 50 and 100
Give examples of five pairs of co-primes.
State the following statement is True or False.
If a number is prime, it must be odd.
Show that the following pairs are co-primes:
385, 621
Which of the following are co-primes?
Write 'T' for true and 'F' for false for the following statement.
Every prime number is odd.
Express the following as the sum of two odd prime.
18
Express the following number as the sum of three odd primes:
21
Prime numbers do not have any factors.
