Can you calculate the probability of getting a sum of six when a dice is thrown twice?

Find the missing number in the image below.

In the figure that has been attached to this question, each digit represents a digit. The similar letters carry the same integer value. Can you expose the original digits?

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

What is the word or phrase?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

I cannot talk, but I always reply when spoken to. What am I?

What does it mean?

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