Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

Count the number of triangles in the given picture.

They are three errirs in this question. Can you find them?

Find the number of squares in the below-given picture.

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

As shown in the picture below, we can see a boy hanging on the tree branch to save his life. There are various ways in which he can die like1. A snake hanging toward the right waiting to bite the boy.2. A roaring Lion near the tree.3. Two crocodiles are ready to attack if the boy reaches near water. The tree is chopped to some extent, so can fall as if he moves a lot. Can you give this boy an escape plan?

When it's bad luck to meet a black cat?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?