Question

how many twin prime numbers are there in 51 to 100​

Answer 1

Answer:

First writing all the prime numbers from 51 to 100, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97. From the above prime numbers we can say only two twin prime pairs exist, those are (59,61) and (71,73). Twin primes between 51 and 100 are (59,61) and (71,73).

Answer 2

(59 61 )(71 73)

Step-by-step explanation:

Every pair of twin primes all start from 5,7,by 6n+5,6n+7 can generate all twin primes pair, from 4 to 8 have one pair 5,7 and only primes in this range, from 9 to 24 have 2 pair, from 25 to 48 have 2 pair, from 50 to 100 have 10 prime number, but only have 59,61 and 71,73 two twin prime pair , some another pair because 5,7 sieve of Eratosthenes start at 5^2,7^2 make only one number is prime only.