Do You See It?

I have an eye but still cannot see.

Who am I?

Using eight eights and addition only, can you make 1000?

Count the number of triangles in the picture below:

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?