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

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

What demands an answer, but asks no questions

What is at the end of a rainbow?

What is the below Rebus indicate?

Which English verb becomes past tense just by rearranging the letters?

Which of the below owl is odd one out?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?