For a math and technical drawing class, the teacher asks the students to get the following items: A pair of compass, a rue, a protractor and a calculator. Paul already has a calculator and so does Judy. Judy and Mark are the only ones with protractors. Alice has both a rule and a pair of compasses and so does Mark. Judy is only missing a rule. John has an item that Mark is missing. Which of the following must be true? A) Paul has a pair of compasses. B) Alice is only missing a protractor. C) Mark is only missing a calculator D) John has a rule
Answers
Answer: C
Explanation: Mark has compass because only he and Judy have it, Mark has rule and protractor as Alice has it.
Thus, Mark doesn't have calculator.
It has asked us to select the statement that must be true and from the given information, we are sure that Mark is only missing a calculator. Thus, option (c) is correct.
It is given to us that -
Students are asked to get a pair of compass, a ruler, a protractor and a calculator
Paul already has a calculator
Judy also has a calculator
Judy also has a protractor
Mark also has a protractor
Alice has both a rule and a pair of compasses
Mark also has both a rule and a pair of compasses
Judy is only missing a rule
John has an item that Mark is missing
We have to find the true statement.
From the given information, we see that -
Mark already has a protractor
Also, Mark has both a rule and a pair of compasses
This implies that, it must be true that Mark is only missing a calculator. The other statements might or might not be true.
Since, it has asked us to select the statement that must be true, we are sure that Mark is only missing a calculator. Thus, option (c) is correct.
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