What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Can you replace the question mark with the correct number?

Spot the cat in the picture below

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

10+10 and 11+11 can give you the same answer.

Explain how?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

Chef Andrea has to light the kitchen stoves to open her restaurant for the day. There are three stoves in the kitchen: A glass stove, a brick stove, and a wood stove. She only has one match. Which does she light up first?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

How many triangles can you find in this given picture?

Why is 6 afraid of 7?