Why is a river so rich ?

I throw two dice simultaneously.

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

Why is it very easy to weigh a fish?

What do the following words have in common?

Assess
Banana
Dresser
Grammar
Potato
Revive
Uneven
Voodoo

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

It is a 5 letter word if you take away first letter it is something you get from sun, if you remove second letter you will get something to eat, if you remove third letter you get a word you use in pointing at and if you remove the fourth letter you get something to drink. What is it?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?