How can you write nineteen in a manner that if we take out one, it becomes twenty?

When can we add 2 to 11 and get 1 as the correct answer?

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

How can you tell a raw egg from a hard-boiled egg?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Do you know who was buried in John's tomb?

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

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?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?