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

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

How do you go from 98 to 720 using just one letter?

A father is locked up in jail. His wife has gone bankrupt. Their male child has to sell his hotel in order to gain some money. Yet their girl child does not care and is quite happy.

How can someone be so rude?

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

Can you replace the question mark with the correct number in the below table sequence?

Why is a river so rich ?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Which English verb becomes past tense just by rearranging the letters?

There are hundred red gems and hundred blue gems. The blue gems are priceless while the red gems equal wastage. You have two sacks one labeled Heads and the other Tails. You have to distribute the gems as you want in the two sacks. Then a coin will be flipped and you will be asked to pick up a gem randomly from the corresponding sacks.

How will you distribute the gems between the sacks so that the odds of picking a Blue gem are maximum?

You are given 2 eggs.
You have access to a 100-storey building.
Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor, Both eggs are identical.
You need to figure out the highest floor of a 100-storey building an egg can be dropped without breaking.
Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process