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

What can go through glass without breaking it?

They are three errirs in this question. Can you find them?

What goes up but never comes down?

If 1+9+8=1, what is 2+8+9?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

What four weights can be used to balance from 1 to 30 pounds?

Which digit occurred maximum times between the number 1 and 1000?

What is the Surname of Barbie Doll?

There is a bag which have 21 blue balls and 23 red balls. You also have 22 red balls outside the bag. Randomly remove two balls from the bag. * If they are of different colors, put the blue one back in the bag. * If they are the same colour, take them out and put a red ball back in the bag. Repeat this until only one ball remains in the bag. What is the color of the sole ball left in the bag ?