What does this rebus riddle means ?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

How is the moon similar to a dollar?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?

Count the number of triangles in the given picture.

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?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Find the 8 in the below-given Image.

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?