Which of the following are twin prime numbers?
Show answer & explanation
Correct answer: A
Explanation
Given:
Options—59, 61; 67, 71; 73, 79; 83, 89
Twin prime numbers are those whose difference is 2 and both are prime.
59 and 61
61 − 59 = 2 → both prime
67 and 71
71 − 67 = 4 → no
73 and 79
79 − 73 = 6 → no
83 and 89
89 − 83 = 6 → no