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

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

What has one letter and starts with an E?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

I shave every day, but my beard stays the same. What am I?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?