Clever riddles with simple answers

I have a little house in which I live all alone. It has no doors or windows, and if I want to go out I must break through the wall. What am I?

What is black when you buy it, red when you use it, and gray when you throw it away?

On the first day they cover one quarter of the total distance. The next day they cover one quarter of what is left. The following day they cover two fifths of the remainder and on the fourth day half of the remaining distance. The group now have 14 miles left, how many miles have they walked?

I have all the knowledge you have. But I am small as your fist that your hands can hold me. Who am I?

Where do fish deposit their money?

Mr. Jason was walking along the sea shore. Suddenly it started drizzling and turned into a heavy rain. He wasn’t carrying any umbrella, not even any cap. He was completely wet and all his clothes were soaked in rain. Yet not even a single strand of his hair was wet! How was that possible?

I am a seed with three letters in my name. Take away the last two and I still sound the same. What am I?

When you have me more, you can see only less. What Am I?

I’m at the beginning of the end and the start of eternity, at the end of time and space, in the middle of yesterday but nowhere in tomorrow. What am I?

Large as a mountain, small as a pea, Endlessly swimming in a waterless sea.