Advertisements
Advertisements
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.
Advertisements
उत्तर
17 and 71,
19 and 91,
37 and 73
79 and 97
There are required pairs of numbers up to 100.
APPEARS IN
संबंधित प्रश्न
Write the smallest odd prime number.
Are co-primes always primes? If no, illustrate your answer by an example.
Express the following number as the sum of twin prime:
120
State the following statement is True or False.
1 is the smallest prime number.
State the following statement as True or False.
If two numbers are co-primes, at least one of them must be a prime number.
Show that the following pairs are co-primes:
343, 432
Which of the prime numbers are even numbers?
Which of the following numbers is not a prime?
The sum of three prime numbers is 80. The difference of two of them is 4. Find the numbers
Which of the following number is prime?
23
