Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

How many triangles can you find in this given picture?

What does does this rebus picture means ?

Which tank will fill first?

On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

How can you drop a raw egg from a height onto a concrete floor without cracking it?