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

Count the number of triangles in the below picture?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

What is black when you buy it, red when you use it, and gray when you throw it away?

Find the next number in the series below

21 32 54 87 131 ?

In the image below, can you find the value of an angle(y)

Move four matchsticks to the below square to form three squares?

Can you identify the Oscar-winning movie from the rebus below?