0 votes 0 votes In a course, a professor gives five grades $\{\text{A, B, C, D, F}\}.$ What is the minimum number of students required so that four of them are guaranteed to get the same grade? None of the above $14$ $18$ $16$ Combinatory uppcl2018 combinatory pigeonhole-principle + – admin asked Jan 5, 2019 • retagged Apr 19, 2022 by Lakshman Bhaiya admin 402 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Worst case: Grade No. of Students A: 3 B: 3 C: 3 D: 3 F: 3 still none of the grade have been given to 4 Students. Lets increase one more Student Whatever be his/her grade(A/B/C/D/F),One of the grade must have given to 4 students.So (3+3+3+3+3) + 1 = 16. Minimum 16 students are required. Abhisek Tiwari 4 answered May 3, 2019 Abhisek Tiwari 4 comment Share Follow See all 0 reply Please log in or register to add a comment.