Answer:
What is black when you buy it, red when you use it, and gray when you throw it away?
I am always in front of you, but yet I am never here. What am I?
What is easy to spot but hard to find?
I am the place where yesterday is always before today. What am I?
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?