If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

It is always ahead of me yet I can never see it. What is it?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

What is at the end of a rainbow?

There was once a troop of 5 elves. The 5 elves were very dedicated on finding the magical treasure of 1000 coins. However, being elves, they were super geniuses, very greedy and they did not hesitate in taking lives of other elves. The 5 elves were named Aye, Bee, Cee, Dee and Ee, ranked from high to low respectively, from Aye to Ee. One fine day, their efforts brought results and they found 1000 coins. Now they had to split it in between them as per their ranks. The lowest ranked elf has to make the proposal. If the proposal is accepted by majority, it is agreed, or the suggesting elf is killed.

What proposal should elf Ee make ?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

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

What does below chemistry rebus means?

I drive at an average speed of 30 miles per hour to the railroad station each morning and catch my train. On a particular morning, there was a lot of traffic and at the halfway point, I had averaged only 15 miles per hour. How fast must I drive for the rest of the way to catch my train?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?