What's the next in the series?

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

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

What is the riddle which can be asked all day with a different correct answer each time.

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

What does this below rebus puzzle mean?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

What do you think with the below Picture ?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?