There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

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

Count the number of triangles in the below picture?

Rearrange the letters in "new door" to make one word.

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Identify the 10 differences between the two given pictures.

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?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

You can see three almost identical images below. Can you spot the odd one out from them?