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

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

What has 13 hearts but no other organs?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

What does it mean?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

John was visiting his friend Jacob. He found out that his friend's wife had just killed a burglar in self-defense.
John asks Jacob about what happened and he told that "His wife was watching television when suddenly the bell rang. She thought that it is her husband Jacob but she found the burglar who attacked her instantly and she got so frightened that she killed the burglar immediately with the knife.
John asked the police to arrest his friend's wife. Why?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.