Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

Find the next number in the following series:
6, 14, 26, 98, __?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

what's the probability of getting a king or a queen from a pack of 52 cards?

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

Can you start the fire using two pieces of wood?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?