A man dies of old age on his 25 birthday. How is this possible?

Which alphabet letter is a question?

Why do you find that most of the buildings are deprived of the 13th floor?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

You bought me for dinner but never eat me. What am I?

How do you go from 98 to 720 using just one letter?

What can you see in the middle of March and April that you can never see in any other month?

Take one out and scratch my head, I am now black but once was red. 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.

All Marigolds are flowers.
Few Flowers are used to make colors.
Therefore, some Marigold are used to make colors.

True Or False?