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

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

What does below rebus means ?

How many times can you subtract the number 5 from 25?

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

How can one talk without saying a single word?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

How many triangles are there on the puzzle below?

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?