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

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

How can you take 2 from 5 and leave 4?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

I have eight fingers and two thumbs but I do not live. What Am I?

What is the next number in the series?

15 29 56 108 208 ?

A couple went on a climbing trip. But only the husband returned from the vacation and said that his wife slipped off while climbing and died. On investigating, the local sheriff arrested him saying, 'Your travel agent called. You murdered your wife.'

The man did not inform anyone about the trip. Then how was the agent so sure that it was a murder?

Why do Chinese men eat more rice than Japanese men do ?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

How many times can you subtract the number two from the number fifty?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?