Using Only Five 5's and any mathematical operator make sum as 37

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

Who can jump higher than a Mountain?

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

When can we add 2 to 11 and get 1 as the correct answer?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

When monkey rotate the gear, which mark will be hit 1 or 2 ?