Which is the smallest number that you can write using all the vowels exactly once?

Find the hidden tiger in the given optical illusion ?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

Rearrange the letters in "new door" to make one word.

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

How many triangles can you find in this given picture?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

Can you find out the remainder when 3^300 is divided by 5?

What is the Surname of Barbie Doll?