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Mars

Instructions: answer the questions, check them carefully, and when you are sure they are all right, press submit. The number of correct answers will be displayed.

Question 1: What is this object? Phobos, moon of Mars




Question 2: The gravity on Mars is:




Question 3: Mars' atmosphere is:




Question 4: The distance from the Sun to Mars varies in the range 1.38 - 1.67 AU. What is the range of distances Mars has from the Earth?




Question 5: Mars varies its distance from the Sun from 207 - 249 million km. Earth is in the range 147 - 152 million km from the Sun. What is the closest the two planets could ever come to each other?




Question 6: Mars varies its distance from the Sun from 207 - 249 million km. Earth is in the range 147 - 152 million km from the Sun. What is the furthest the two planets could ever be from each other?




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Question: A girl counts the number of matches in each box of a new packet of 12 boxes (her TV is being repaired). The manufacturer claims that the boxes should contain 50 matches each, but she finds this claim has an accuracy of ± 4%. What is the lower bound of the number of matches in total?




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