Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

I know a nine-letter word having only one vowel.
Do you ?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

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?

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.

Replace the question mark with the correct number.

2, 3, 5, 9, 17, _ What is the next number in the sequence?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Complete the given grid with valid words. You can only use the letters AAEEIIMMPPTT.

Hint: The grid reads the same across as down.

What two things can you never eat for breakfast?