What does this Rebus Picture mean?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

What word begins and ends with an E, but has only one letter?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

What word is pronounced the same if you take away four of its five letters?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

What is so fragile that saying its name breaks it?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.