Which word does the below Plexor means ?

Can you name some countries which do not have the alphabet 'A' in them?

Can you find the key in the picture below?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

what's the probability of getting a king or a queen from a pack of 52 cards?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?