I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

What does below Rebus say?

XLR8

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

Replace the question mark with the correct number in below Picture:

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

I make two people out of one. What am I?

There are hundred red gems and hundred blue gems. The blue gems are priceless while the red gems equal wastage. You have two sacks one labeled Heads and the other Tails. You have to distribute the gems as you want in the two sacks. Then a coin will be flipped and you will be asked to pick up a gem randomly from the corresponding sacks.

How will you distribute the gems between the sacks so that the odds of picking a Blue gem are maximum?

Different lights make me strange by changing me into different sizes. What am I?