Put seven pigs in the first three pens and arrange the fourth pen to contain the other three pens.

A fine chap with a blind nephew (or an exemplary uncle who died before his nephew was born).

If you move the first letter to the end of the word, it forms the same word backwards. Banana = ananab, dresser = resserd, and so on.

The letter A.

There are three separate series

1. Starting with the first letter and taking every third letter you get ITALY.
2. Starting with the second letter and taking every third letter you get SPAIN.
3. Starting with the third letter and taking every third letter you get INDIA.

Happenchance. There are two Hs, two As, and so on for all the letters in the word. The longest scientific word with the same property is probably esophagographers.

1. Flip both hourglasses over and drop the egg into the water.
2. When the 4-minute timer runs out, flip it over (4 minutes elapsed, 3 remaining on the 7-minute timer).
3. When the 7-minute timer runs out, flip it over. (7 minutes elapsed, 1 remaining in the 4-minute timer)
4. When the 4-minute timer runs out, flip the 7-minute timer over. (8 minutes elapsed. 6 minutes remained in the 7-minute timer, but flipping it over leaves one minute’s worth of sand on top. When it runs out exactly nine minutes will have elapsed.)

The tree is in the middle of the road as measured by length, not in the middle of it by width. In other words, the tree is growing on the side of the road, but it is equidistant from either end of the road, and therefore in the middle.

This makes it quite easy to pass the tree as you just drive on the road, unless you’re texting and you run into said tree. If this is the case, stop texting.

Thanks to everyone’s input on this one!