What does this rebus puzzle means ?

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

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

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Count the number of triangles in the given picture.

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Using eight eights and addition only, can you make 1000?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?