Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Three cars are driving on a track that forms a perfect circle and is wide enough that multiple cars can pass anytime. The car that is leading in the race right now is driving at 55 MPH and the car that is trailing at the last is going at 45 MPH. The car that is in the middle is somewhere between these two speeds.
Right now, you can assume that there is a distance of x miles between the leading car and the middle car and x miles between the middle car and the last car and also, x is not equal to 0 or 1.
The cars maintain their speed till the leading car catches up with the last car and then every car stops. In this scenario, do you think of any point when the distance between any two pairs will again be x miles i.e. the pairs will be x distance apart at the same time ?

Which flower has two lips?

What's the next in the series?

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

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

What has to be broken before you can use it?

What Time Should the last watch show in the below figure?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two.

Can you tell me how many flowers I have?