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

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

What does this rebus puzzle mean?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

What is the word or phrase?

Which holiday are we talking about?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

What word is pronounced the same if you take away four of its five letters?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M