Before Mount Everest was discovered, what was the highest mountain in the world?

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

What Am I?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

The more of this there is, the less you see. What is it?

Can you write down eight eights so that they add up to one thousand?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

O_er_t_o_

Complete the missing letters of the given word.