What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

What you cannot hold but it is yours?

John was drowned by he was not wet. How?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Solve the equation in the image by looking at the pattern closely.

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. 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. Can you tell me how that was possible?”

What is next number in the pattern below:

131 517 192 123 ?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.