How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Why is 6 afraid of 7?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

How many triangles are there on the puzzle below?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

Solve the counting riddle by identifying the number of triangles in the given picture.

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

Can you name some countries which do not have the alphabet 'A' in them?