If eleven plus two equals one, what does nine plus five equal?

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

What Am I?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

Who always enjoys poor health?

What has to be broken before you can use it?

I have branches, but no fruit, trunk or leaves. What am I?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

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

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

what one word does the below rebus identifies?