Can you find the hidden animal in the picture below?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

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

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

What does this mean?

CCCCCCC

What goes up but never comes down?