तीन क्रमागत सम संख्याओं का औसत 18 है। इनमें से सबसे छोटी संख्या ज्ञात कीजिए।

What is the average number of students in B.Tech (220), M.Tech (140), and B.A (4344) courses together?

A class has two sections A and B, which have 36 and 44 students respectively. If the average weight of section A is 40 kg and that of section B is 35 kg, find the average weight of the whole class.