If A+B means A is the brother of B.
A`div`B means A is the father of B
A `xx`B means A is the sister of B,
which of the following means M is the uncle of P?

Options

A. `N xx P + M`
B. `M + S + R + P`
C. `M + N xx P `
D. `M + K div T xx P `

Answer

D

Explanation

Choice 1 is wrong as sex of M is unknown. Gap between M P is `0+ 1 + 1 =2` in choice `2, 0 + 1 =1` in choice `3, 0 1 + 0 =1` in choice 4. that if M was to be an uncle of P, M must be a brother of somebody who is a father of P. Since choice 3 does not give us whether M is a brother we settle for choice 4. Drawing its family tree we see that it indeed is a correct choice.
`{:(M (+) - K (+)),(" "|),(" "T (-)- P ):}`