Our product and our sum always give the same answer. Who are we?

I have an eye but still cannot see.

Who am I?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

Can you find out who is the kidnapper in below Picture and why, Explain ?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Can you count the number of triangles in the given figure?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?