What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

What's the best place to go shopping in the ocean?

In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

Can you solve below mathematical equation?

2^1234 - 2^1233

What work can one never finish?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.