How may Prime (twin prime) numbers are between 70 and 100 ?

Explanation

Twin Prime number are such prime numbers in which there is a difference of two e.g. (3, 5) and (5, 3) According to question– There are 6 prime number between 70 and 100 71, 73, 79, 83, 89, 97 Hence the number of twin prime between 70 and 100 is 1 (71 71 & 73).