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प्रश्न
Which of the following are co-primes?
विकल्प
39, 91
161, 192
385, 462
none of these
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उत्तर
161 and 192
39 and 91 are not co-primes as 39 and 91 have a common factor, i.e. 13.
161 and 192 are co-primes as 161 and 192 have no common factor other than 1.
385 and 462 are not co-primes as 385 and 462 have common factors 7 and 11.
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संबंधित प्रश्न
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80 and 100
Write the smallest prime number.
Show that the following pairs are co-primes:
343, 432
Show that the following pairs are co-primes:
512, 945
Show that the following pair is co-prime.
847, 1014
Write 'T' for true and 'F' for false for the following statement.
Every prime number is odd.
Which of the prime numbers are even numbers?
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.
Which of the following number is prime?
26
2 is the only even prime number.
