Mathematica

Complex Number Classroom teaching lecture
STB BOARD MATHEMATICS CLASS XI

Differentiations
Lecture at Paradise College

🏎️ THE SPEED TEST
A car travels from A to B at 40 km/h and returns from B to A at 60 km/h.
What is the average speed for the whole journey?
A) 50 km/h
B) 48 km/h
C) 52 km/h
(Warning: It's not the middle number!)

Explain your logic in the comments! 🧠✍️