MathDB

4

Part of 1988 Mexico National Olympiad

Problems(1)

no of ways of selecting 8 integers a_i such that 1<a_1<=...<=a_8<=8

Source: Mexican Mathematical Olympiad 1988 OMM P4

7/27/2018
In how many ways can one select eight integers a1,a2,...,a8a_1,a_2, ... ,a_8, not necesarily distinct, such that 1≤a1≤...≤a8≤81 \le a_1 \le ... \le a_8 \le 8?
combinatoricsIntegers