☰ Contents · Algebra

Permutations and combinations

Lessons 36 · 1 lessons · Sh.A. Alimov, O.R. Xolmuhamedov, M.A. Mirzaahmedov. Algebra, Grade 7, revised and expanded 5th edition. O‘qituvchi NMIU, Tashkent, 2017
Answers are for parents and teachers.
1
Compute 6!.
2
Compute C₉².
3
In how many ways can 2 boys and 1 girl be chosen from 5 boys and 4 girls?
4
How many permutations are there of 4 different letters?
5
Compare C₈³ and C₈⁵. What does the result show?