On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

It is always ahead of me yet I can never see it. What is it?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

What is the last thing you take off before bed?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

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?