I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

What does this simple rebus mean?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

What am I?

Solve below popular number sequence
314 159 265 358 979 323 846 ?