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प्रश्न
The digits of the prime number 13 can be reversed to get another prime number 31. Find if any such pairs exist upto 100
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उत्तर
The required pairs are
(i) 17 and 71
(ii) 37 and 73
(iii) 79 and 97
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संबंधित प्रश्न
Write the smallest odd prime number.
Express the following number as the sum of two odd prime:
98
Express the following odd number as the sum of three odd prime number:
31
Show that the following pairs are co-primes:
385, 621
Fill in the blank.
Two perfect numbers are ________ and _______
The only even prime number is
Which of the following numbers is not a prime?
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 number as the sum of three odd primes:
61
Which statement correctly describes a prime number?
