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Mathematics > Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer. 

Which of the following CANNOT be the lengths of the sides of a triangle?

Answer Choices

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Explanation

The sum of the lengths of any two sides of a triangle must be greater than the length of the third side. Four of the answer choices can be eliminated because each set of three numbers can be the lengths of three sides of a triangle. For example, in the third choice (1 comma 75 comma 75), the sum of any two numbers is greater than the third number. However, the second choice (1 comma 2 comma 4) cannot be the lengths of the sides of a triangle, since 1 + 2 is not greater than 4. This choice is the correct answer, since the question asked which set of numbers could NOT be lengths of the sides of a triangle.

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