Question

If P x Q means P is the father of Q, and P + Q means P is the brother of Q, then which expression shows that A is the uncle of B?

• A. A + C x B
• B. A x C + B
• C. A + B x C
• D. C x A + B

Hint:

An uncle is the brother of a parent; find the chain brother-of then father-of.

Answer 1

The Correct Option is A

Elimination.
An uncle must be the brother of a parent. Only A + C x B places A as brother of C while C is a parent of B, so the other options fail.
\[\boxed{A + C\ x\ B}\]