You are given a question and two statements. Identify which of the statements is/are necessary/sufficient to answer the question.
Nita has balls of three colours. Can we say how many yellow balls she has?
Statements:
1. There are six balls
2. One third of the balls are blue
3. Half of the balls are red1
Statement 2 alone is sufficient
2
Statement 1 alone is sufficient
3
Statement 1 and 2 together are not sufficient
4
Statement 1, 2 and 3 together are necessary