Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

Which digit occurred maximum times between the number 1 and 1000?

Find the 8 in the below-given Image.

If it took eight men ten hours to build a wall, how long would it take four men to build it?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?