Cho văn phạm phi ngữ cảnh với tập quy tắc sinh là R = { I->aIa, I->aa/a∈∑={a1,a2,a...,a3}.

tìm ngôn ngữ do văn phạm sinh ra. Hãy chỉ ra dẫn xuất đầy đủ của xâu ω=a3a2a3a1a2a2a1a3a2a3 trong văn phạm trên

Amaple syrup producer records th amount of sap collected from each of his trees. the line plot shows the results for one day. what is the least amount of sap any one tree produced?

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.