On occasion of Diwali (a Hindu festival), the local ice cream seller is selling ice cream at an 80% discount. But, he got just two flavours, vanilla and cocoa-chipped. He is selling vanilla at Rs1 and Choco-chip at Rs2. However, he is giving just one ice cream to each person.
Shruti went to the shop and give the seller Rs.2 and without asking her the seller gives her Choco-chip ice cream. Next, Anmol comes and also gave the seller the same amount i.e. Rs2. Now the seller asks Anmol which ice-cream does he wants.
Why such a different behaviour towards Shruti and Anmol?
Shruti puts 2 Rs1 note which indicate that she needed the choco-chip ice cream. If she needed the vanilla she must have put just one Rs1 note. Anmol put just 1 Rs2 note, so the seller can not judge which ice cream he wants.