What English word has three consecutive double letters?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

what does this below rebus represent identXQQQQQME

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 have one eye but still cannot see?

What will you call your mother's brother's brother-in-law?