You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

After undergoing a successful eye operation, A blind girl has just boarded a train to her home. The doctor asked her to open the bandages after 3 hours. On her train journey, she opened the bandages and within a fraction of the time she commits suicide by jumping off the train.

Though her operation was successful, Why did she commit suicide?

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

What Deficiency does the below rebus represent?

VIT_MIN

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

What has to be broken before you can use it?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?