What is black when you buy it, red when you use it, and gray when you throw it away?

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?