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प्रश्न
The numbers 13 and 31 are prime numbers. Both these numbers have the same digits 1 and 3. Find such pairs of prime numbers up to 100.
उत्तर
17 and 71,
19 and 91,
37 and 73
79 and 97
There are required pairs of numbers up to 100.
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संबंधित प्रश्न
What are co-primes?
Give examples of five pairs of co-primes.
Express the following number as the sum of twin prime:
84
State the following statement is True or False.
The sum of two prime numbers is always a prime number.
Which of the following is a prime number?
Which of the following are co-primes?
Write 'T' for true and 'F' for false for the following statement.
The sum of two odd numbers is always odd.
Write all the prime numbers between 1 and 20.
Express the following number as the sum of three odd primes:
31
Prime numbers do not have any factors.
