Question 39
Let the sequence (arithmetic progression)
$$
3, 7, 11, 15, \ldots
$$
Prove that in this sequence there are infinitely many prime numbers.
$$
3, 7, 11, 15, \ldots
$$
Prove that in this sequence there are infinitely many prime numbers.
MathNet 1992 — Part 01 Question 39
Math Olympiad Vault · MathNet 1992 — Part 01