Can you convert the number zero(0) into a positive number using just one mathematical operator ?

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.

What is full of holes but still holds water?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

What is the last thing you take off before bed?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

'Ferrari driver' easily beats the 'force driver' in a two-car race. How did Indian newspapers truthfully report so to look as a 'force drive' had outdone the 'Ferrari driver'? Think!!!

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?