Who among N, F, P, B and D is the youngest?
I. P and B are younger than N and D.
II. F is younger than N, D and P but older than J.
If the data in statement II alone is sufficient to answer the question, while the data in statement I alone is not sufficient to answer the question
Statement I,
N/D>P/J
Hence, Statement I alone is insufficient.
Statement II,
N/D/P > F > J
Clearly J is the youngest.
Hence, Statement II alone is sufficient to answer the question.