Question and Answers Forum

All Questions      Topic List

Permutation and Combination Questions

Previous in All Question      Next in All Question      

Previous in Permutation and Combination      Next in Permutation and Combination      

Question Number 202598 by cortano12 last updated on 30/Dec/23

Answered by MM42 last updated on 30/Dec/23

$$780$$$$$$

Commented by MM42 last updated on 30/Dec/23

Commented by MM42 last updated on 30/Dec/23

$$\frac{40\times 40-40}{2}=780$$

Answered by mr W last updated on 30/Dec/23

$$x,y⩾1$$$$x+y<41$$$$x=1,y=1,2,3,...,39$$$$x=2,y=1,2,3,...,38$$$$...$$$$x=39,y=1$$$$\Rightarrow 1+2+3+...+39=\frac{39\times 40}{2}=780points$$

Terms of Service

Privacy Policy

Contact: info@tinkutara.com