Last Problem:
A blacksmith has been asked to make one long chain from five three-link bits of chain. Can you find a way to do it so that she has to make just three welds?
By “Three Link Bits of Chain” we mean a a short chain with three circular links that are connected. A middle link is joined together with two outer links. There are five of these short three link chains and the blacksmith needs to make one long chain from these five short three link chains.
Answer:
One of the small chains has to be separated into its three separate links. This is then used to link together the other four short chains, making the one long chain.
Today’s Problem:
The earth is not a perfect sphere. It is a bit flat at the top and it bulges at the equator. It is a bit fat in the middle (like some of us beings).
Given this information (which really is true – no joke here) can you work out where you weigh more – at the North Pole, at the South Pole or at the equator?