1) The word "computer" contains three vowels: O, U, and E.

2) The world's tallest waterfall is Angel Falls in Venezuela, with a height of about 3,212 feet (979 meters).

3) In Hindu mythology, the Trimurti consists of the three major gods: Brahma (the creator), Vishnu (the preserver), and Shiva (the destroyer). They represent the cycles of creation, preservation, and destruction, respectively, and together embody the cosmic forces that shape the universe.

4) The word "country" contains three vowels: O, U, and Y.