Question

For a given family, which generation in a family tree has 64 members?

• A. 4th generation
• B. 5th generation
• C. 6th generation
• D. 10th generation

Answer 1

The correct option is C 6th generation


If we consider the above family tree,
Current Generation- You (1)

Generation 1 - Your father and Your mother (2)

Generation 2- Your grandparents from both your mother's and father's side (4)

If you notice, the number of members in every previous generation is twice the number of members in current generation.
Continuing the same,
$\text{3rd generation}=2\times 4=8$
$\text{4th generation}=2\times 8=16$
$\text{5th generation}=2\times 16=32$
$\text{6th generation}=2\times 32=64$