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Which of the following sets of numbers could not represent the three sides of a triangle?

{6,20,24}

{6,9,13}

{10,25,36}

{11,23,33}

Which of the following sets of numbers could not represent the three sides of a triangle?\newline{6,20,24} \{6,20,24\} \newline{6,9,13} \{6,9,13\} \newline{10,25,36} \{10,25,36\} \newline{11,23,33} \{11,23,33\}

Full solution

Q. Which of the following sets of numbers could not represent the three sides of a triangle?\newline{6,20,24} \{6,20,24\} \newline{6,9,13} \{6,9,13\} \newline{10,25,36} \{10,25,36\} \newline{11,23,33} \{11,23,33\}
  1. Triangle Inequality Theorem: To determine if a set of numbers can represent the sides of a triangle, we use the triangle inequality theorem. The theorem states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side. We will apply this theorem to each set of numbers.
  2. Set {6,20,24}\{6,20,24\}: First, we check the set {6,20,24}\{6,20,24\}. According to the triangle inequality theorem, we should have 6 + 20 > 24, 6 + 24 > 20, and 20 + 24 > 6. Let's check these inequalities:\newline6+20=266 + 20 = 26, which is greater than 2424.\newline6+24=306 + 24 = 30, which is greater than 2020.\newline20+24=4420 + 24 = 44, which is greater than {6,20,24}\{6,20,24\}00.\newlineAll inequalities hold true, so this set could represent the sides of a triangle.
  3. Set {6,9,13}\{6,9,13\}: Next, we check the set {6,9,13}\{6,9,13\}. According to the triangle inequality theorem, we should have 6 + 9 > 13, 6 + 13 > 9, and 9 + 13 > 6. Let's check these inequalities:\newline6+9=156 + 9 = 15, which is greater than 1313.\newline6+13=196 + 13 = 19, which is greater than 99.\newline9+13=229 + 13 = 22, which is greater than {6,9,13}\{6,9,13\}00.\newlineAll inequalities hold true, so this set could represent the sides of a triangle.
  4. Set {10,25,36}\{10,25,36\}: Now, we check the set {10,25,36}\{10,25,36\}. According to the triangle inequality theorem, we should have 10 + 25 > 36, 10 + 36 > 25, and 25 + 36 > 10. Let's check these inequalities:\newline10+25=3510 + 25 = 35, which is not greater than 3636. This inequality does not hold true.\newlineTherefore, this set cannot represent the sides of a triangle.
  5. Set {11,23,33}\{11,23,33\}: Finally, we check the set {11,23,33}\{11,23,33\}. According to the triangle inequality theorem, we should have 11 + 23 > 33, 11 + 33 > 23, and 23 + 33 > 11. Let's check these inequalities:\newline11+23=3411 + 23 = 34, which is greater than 3333.\newline11+33=4411 + 33 = 44, which is greater than 2323.\newline23+33=5623 + 33 = 56, which is greater than {11,23,33}\{11,23,33\}00.\newlineAll inequalities hold true, so this set could represent the sides of a triangle.

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