Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

Why Wine Glass Stem is so long?

Count the number of lines in the image below ?

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

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

A father's child, a mother's child, yet no one's son.

Who am I?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

The Little ant seems to be always confused. Do you know why?