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

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

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

What can you hold in your right hand, but never in your left hand?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

What part of the chicken has the most feathers?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

Solve the rebus riddle in the picture below.

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

What have one eye but still cannot see?