This question is on the current Sigma Camp’s Qualification Quiz for 2017
http://sigmacamp.org/sites/default/files/page_attachments/Qualification_Quiz_2017_Sigma.pdf
The camp is for children from ages 13 to 16 years. There are questions in all branches and disciplines of mathematics and science. Most of the questions seem very difficult – to me.
After a little thought, I realized the superlative wording of the question tends to send the solution seeker on a tangent toward a wild goose, instead of a correctly weighted elephant. To solve this though, one must think totally inside the box (instead of outside).
The solution:
The lightest elephant weighs 4000Kg. All the other elephants also weigh 4000Kg.
I’m glad elephants are used as prop for the question. Now, I will never forget.
Note to Blarney Banker: If you don’t understand this, I can try to dumb it down for you. However, I’d probably just be wasting my time and annoying the pịg.