Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

What's the best place to go shopping in the ocean?

A Monkey, a squirrel, and an Eagle are racing to the top of the mango tree. Assuming all these animals are in perfect shape, Which animal will reach to Banana first?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

In which direction should the missing arrow point?

John bought a new car. He has a habit of eating ice cream from a particular ice cream shop while returning home from office. Whenever, he eats strawberry ice cream, he faces no problem. But whenever, he eats chocolate ice cream, the car starts giving problem. At first, he thinks, it is just a co-incidence but when this awkward incident happens for 3-4 times, he reports this problem to the company.

The mechanic of the company checks but finds no problem at all. The next day, when he stops by to eat chocolate ice cream, the car again starts giving problem.

Can you find the possible reason?

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.

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

What's the next in the series?

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