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प्रश्न
What are prime numbers? Give ten examples.
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उत्तर
Prime number: A number is called a prime number if it has only two factors, namely 1 and itself.
Examples: 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29 are prime numbers.
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संबंधित प्रश्न
What are twin primes?
Write all the pairs of twin primes between 50 and 100
Express the following number as the sum of twin prime:
84
Which of the following are co-primes?
The digits of the prime number 13 can be reversed to get another prime number 31. Find if any such pairs exist upto 100
Which of the following number is prime?
23
Which of the following number is prime?
37
Write five pairs of prime numbers less than 20 whose sum is divisible by 5. (Hint : 3 + 7 = 10)
A number which has only two factors is called a ______.
Prime numbers do not have any factors.
If a number can be arranged in many rectangular arrangements, it is:
