What number comes next in the series?

5 15 5 18 5 24 14 20 _

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

Which wheel of car does not rotate when you turn your car right?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?