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प्रश्न
What are prime numbers? Give ten examples.
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
Express the following number as the sum of two odd prime:
42
Express the following odd number as the sum of three odd prime number:
49
Show that the following pairs are co-primes:
161, 192
Show that the following pair is co-prime.
847, 1014
Which of the following is a composite number?
Write 'T' for true and 'F' for false for the following statement.
Every prime number is odd.
Write 'T' for true and 'F' for false for the following statement.
The sum of two even numbers is always even.
Find the sum of all the prime numbers between 10 and 20 and check whether that sum is divisible by all the single digit numbers.
Express the following as the sum of two odd prime.
24
2 is the only even prime number.
