I take an auto from office to home and most of the times the fare cames to 20. Lot of times I give 100 Rs note and get back my change.
And if I happen to get back 50+10+10+10, every single time I feel it as 70.
I have tried recounting and still I ended up with 70. I used to ask the fella if he has given it correctly, but that used to cause a lot of embarrassment. So I have stopped questioning about it. For a time being I have decided to assume it 80 whenever I count 70.
I wonder why do I always end up counting 80 as 70.