Step-by-step Solution:

Quick Solution

The best way to solve this blood relation puzzle is to draw a family tree based on the clues to determine the gender of each person.

1. Building the Family Tree

• "C is wife of B and mother of F" tells us B (male) and C (female) are a married couple, and F is their child.
• "D is mother of B" makes D the paternal grandmother of F.
• "F is the granddaughter of E" means E must be the other grandparent. Since D is B's mother, E must be B's father. This makes (E, D) the first married couple.
• "D is grandmother of A" means A must also be a child of B and C, making A and F siblings.

This gives us the following family structure:

2. Determining the Genders and Counting the Males

From the clues and the tree, we can identify the gender of almost everyone:

• E is the grandfather, so he is Male.
• B is the father and husband, so he is Male.
• D is the grandmother and mother, so she is Female.
• C is the mother and wife, so she is Female.
• F is the granddaughter, so she is Female.
• A is the grandchild, but their gender is never stated. A could be male or female.

Because we don't know A's gender, the total number of male members could be either two (E and B) or three (E, B, and A).

Final Answer: The number of male members Cannot be determined.