> Divide into 3 groups, a, b, c. Suffix with 1, 2, 3. What if each of these balls are thirty tonnes? Is it not practical to weigh only two at a time.
You are working back from a solution and never attempt to solve it from the problem stage and this itself is unfair to the candidate. The only aim in this line of interviewing is to unsettle/belittle the candidate or put him/her on a backfoot. Lukhman.
