What has one letter and starts with an E?

How many times can you subtract the number 5 from 25?

Which Burger Is Different in below image?

Can you find the missing piece of the Porsche?

If eleven plus two equals one, what does nine plus five equal?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

During which month do people sleep the least?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?