China Naming Network - Weather knowledge - Draw lots to decide.
Draw lots to decide.
(1) Draw a tree:
There are four possible test schemes: ① 800m, basketball and parallel bars; ②800 meters, basketball, horizontal bar; ③ 800m, volleyball and parallel bars; ④ 800m, volleyball, horizontal bar;
(2) Let these four schemes be represented by 1234 respectively;
Draw a tree:
∫ * * There are 16 possible results, and there are 4 cases where Xiaoli and Xiaohong draw the same test scheme.
∴P (Xiao Li and Xiao Hong draw the same test scheme) = 14.