Data Sufficiency Practice Test 1

Directions (21−30) : In the following questions, each question is followed by two Statements I and II.
Mark (1) if Statement I is alone sufficient, but Statement II alone is not sufficient to answer the questions;
Mark (2), if Statement II alone is sufficient, but Statement I alone is not sufficient to answer the question;
Mark (3), if both Statements I and II, together are sufficient, but neither statement alone is sufficient to answer the question;
Mark (4), if both Statements I and II together are not sufficient to answer the question.