If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Can you count the number of blocks in the picture below?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

What has one letter and starts with an E?

I cannot talk, but I always reply when spoken to. What am I?

What is the probability of getting five Mondays in a 31-day month?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?