Numeracy, a term akin to literacy, was coined by Prof. John Allen Paulos, Math professor at Temple University in the US in his excellent book, Innumeracy. Innumeracy meens Math illiteracy. In day to day life, we come across several instances of innumeracy and I am not joking. Let me share my personal experiences over last few years in our own India and in Chennai no less, which claims to have a long tradition of math excellence. Interviewing over the last 8 to 10 years, over 400 well qualified young people between the ages of 21 and 35 years, I have come across several such cases. The qualifications range from Engineering degrees, accountancy (CA, ICWA), MBAs in HR, Purchasing, Sales and Marketing, and so on. You can imagine a vast majority would be engineers considering that I am in the Manufacturing business. One of my favourite questions to them in the early minutes of the interview is ask them to state their height in centimeters and convert that to inches and then to feet. I sim...