What does below rebus means ?

Which is the smallest number that you can write using all the vowels exactly once?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

What is at the end of a rainbow?

what's the probability of getting a king or a queen from a pack of 52 cards?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

What runs around the whole yard without moving?