Problem K. 467. (September 2015)
K. 467. Let \(\displaystyle p\) denote a prime number greater than 3 and less than 1000. What are the chances that \(\displaystyle p−1\) or \(\displaystyle p+1\) is divisible by 6?
(6 pont)
Deadline expired on October 12, 2015.
Statistics:
142 students sent a solution. 6 points: 78 students. 5 points: 22 students. 4 points: 4 students. 3 points: 4 students. 2 points: 6 students. 1 point: 17 students. 0 point: 11 students.
Problems in Mathematics of KöMaL, September 2015