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

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?