What's the next in the series?

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

Can you write down eight eights so that they add up to one thousand?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

What has one eye, but can’t see?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

What always comes into a house through the keyhole?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.