What is always in front of you but can’t be seen?

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?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What has to be broken before you can use it?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Which flower has two lips?

How many times can you subtract the number two from the number fifty?

Which letter of the alphabet has the most water?

Can you count the number of matches in the picture below ?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?