Pointing out to a lady a girl said “she is the daughter in law of my father’s son”. How is the lady related to the girl?

A and B are brothers. C and D are sisters. A’s son is D’s brother. How is B related to D?

If B says that “his mother is the only daughter of A’s mother” how is A related to B?

Which one is odd from the others?

What is the minimum number of cars that could move in the following format? Two cars in front of a car, two cars behind a car and a car between two cars:

How many 9’s are there preceded by 3 in the given sequence? 

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