You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Which alphabet letter is a question?

Can you replace the question mark with the correct number in the below table sequence?

Find the number of squares in the below-given picture.

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

You need to remove two matchsticks to make the below equation true. Can you do it ?

Thomas has missed an excessive number of days of school, so he must meet with Principal Davis. Mr. Davis asks him "Why on Earth have you missed so many days?" Thomas replies "There just isn't enough time for school. I need 8 hours of sleep a day, which adds up to about 122 days a year. Weekends off is 104 days a year. Summer vacation is about 60 days. If I spend about an hour on each meal, that's 3 hours a day or 45 days a year. I need at least 2 hours of exercise and relaxation time each day to stay physically and mentally fit, adding another 30 days. Add all of that up and you get about 361 days. That only leaves 4 days for school." The principal knows Thomas is full of it, but can't figure out why. Where is Thomas going wrong?

Who has married many women but was never married?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C