7. Rahesa wants to weigh 4 watermelons that she has just harvested. Unfortunately, at Rahesa's house there are only the scales left by her grandfather. Because the scales are outdated, they can only measure between 12-20 kg, so Rahesa can only weigh 2 watermelons at a time. After weighing 5 times, suddenly the scale broke. The results of Rahesa's first 5 scales were 20, 17, 14, 19, and 15 kg. Which of the following statements is true... A) Rahesa cannot determine the weight of each watermelon. B) Rahesa cannot determine the total weight of the four watermelons. C) The lightest watermelon weighs less than or equal to 6 kg. D) The heaviest watermelon has a weight greater than or equal to 12 kg. E) There are at least two watermelons that weigh the same.
7. Rahesa wants to weigh 4 watermelons that she has just harvested. Unfortunately, at Rahesa's house there are only the scales left by her grandfather. Because the scales are outdated, they can only measure between 12-20 kg, so Rahesa can only weigh 2 watermelons at a time. After weighing 5 times, suddenly the scale broke. The results of Rahesa's first 5 scales were 20, 17, 14, 19, and 15 kg. Which of the following statements is true... A) Rahesa cannot determine the weight of each watermelon. B) Rahesa cannot determine the total weight of the four watermelons. C) The lightest watermelon weighs less than or equal to 6 kg. D) The heaviest watermelon has a weight greater than or equal to 12 kg. E) There are at least two watermelons that weigh the same.
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 40SE: A family consisting of 2 parents and 3 children is to pose for a picture with 2 family members in...
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Transcribed Image Text:7. Rahesa wants to weigh 4 watermelons that she has just harvested.
Unfortunately, at Rahesa's house there are only the scales left by her
grandfather. Because the scales are outdated, they can only measure
between 12-20 kg, so Rahesa can only weigh 2 watermelons at a time.
After weighing 5 times, suddenly the scale broke. The results of Rahesa's
first 5 scales were 20, 17, 14, 19, and 15 kg. Which of the following
statements is true...
A) Rahesa cannot determine the weight of each watermelon.
B) Rahesa cannot determine the total weight of the four watermelons.
C) The lightest watermelon weighs less than or equal to 6 kg.
D) The heaviest watermelon has a weight greater than or equal to 12 kg.
E) There are at least two watermelons that weigh the same.
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