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

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

A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

What does this mean?

CCCCCCC

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

Can you solve the rebus below?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

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?