What's the next in the series?

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

Solve the rebus riddle in the picture below.

Count the number of triangles in the picture below:

What does this rebus riddle mean?

I know a nine-letter word having only one vowel.
Do you ?

Vin Diesel is pulling a theft and has planned to run away with all the cash kept in the safe. But the only way to open the safe is the 13 character password. He has a set of five clues given to him by a trustworthy source.

Exactly two of the below statements are false.
The password is contained within this sentence.
The password is not in this hint.
The password is within only one of these statements.
At least one of the above statements is a lie.

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

What has many teeth, but cannot bite?

In the formation, you can see a few arranged matchsticks. Can you form three squares by moving just three matchsticks?