Classic example for students of different age groups:
1st to 3rd std.: Hey i studied everything for exam da.
4th to 6th std.: Hey that question was very hard da so i didn't read that.
6th to 10th std.: Hey studied only important questions.
10th to 12th std.: Dai 4 chapters is enough according to blue print
UG: Machan what exam today da.
PG: Oh! Inaiku exam ah... ok ok...
