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

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

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?

In the following series, a set of numbers is progressing with a particular pattern. Can you deduce that pattern and find the missing set?

(2 + 6), (21 + 6), (58 + 6), (119 + 6), ___

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

What Am I?

What is the last thing you take off before bed?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

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