Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Complete the table series riddle by finding the number that can replace "??".

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

What does does this rebus picture means ?

I make two people out of one. What am I?

What does this simple rebus mean?

What is common among 11, 69, and 88?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?