Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

During which month do people sleep the least?

What's the only room from which no one can enter or leave

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

Can you replace the question mark with the correct number?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

What have one eye but still cannot see?

How is the moon similar to a dollar?

What am I?

Can you guess the name of the month by looking the below rebus ?