Multiple choice

The questions given below contain two statements giving certain data. You have to decide whether the data given in the statements are sufficient for answering the question. Mark answer What is the probability that at least two are green balls? I. A basket contains 3 blue, 2 green and 5 red balls. II. The balls are picked at random.

  1. If statement I alone is sufficient but statement II alone is not sufficient.

  2. If statement II alone is sufficient but statement I alone is no sufficient.

  3. If each statement alone (either I or II) is sufficient.

  4. If statement I and II together are not sufficient.

  5. If both statement together are sufficient but neither statement alone is sufficient.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To find the probability that at least two are green balls, we need to know how many balls are being picked. Statement I gives the composition of the basket (10 balls total: 3 blue, 2 green, 5 red). Statement II only tells us balls are picked randomly, but doesn't specify the sample size. Without knowing how many balls are drawn, we cannot calculate any probability. Even combining both statements, the sample size is missing, making the data insufficient.

Keep practicing — related questions