IB Mathematics SL Prep

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| By AdewumiKoju

AdewumiKoju

Community Contributor

Quizzes Created: 810 | Total Attempts: 967,803

Questions: 10 | Attempts: 248 | Updated: Mar 18, 2023

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The IB Mathematics SL Prep is prepared to nourish your interest in mathematics. It is prepared to improve your competence. The prep contains questions related to the requirements of future exams. Want to study mathematics as a major in the university or not? This prep gets you ready.

Questions and Answers

1.

What is the sum of angles in a tight angle?
- A.
  
  90°
- B.
  
  120°
- C.
  
  150°
- D.
  
  180°
Correct Answer
A. 90°

Explanation
A tight angle is defined as an angle that is less than 90°. Therefore, the sum of angles in a tight angle would be less than 90°. Among the given options, the only angle that is less than 90° is 90° itself. Hence, the correct answer is 90°.

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2.

What is the sum of angles on a straight line?
- A.
  
  45°
- B.
  
  270°
- C.
  
  90°
- D.
  
  180°
Correct Answer
D. 180°

Explanation
The sum of angles on a straight line is always 180°. This is because a straight line forms a straight angle, which is a line that measures 180°. Therefore, the correct answer is 180°.

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3.

Which of these is not a perfect square?
- A.
  
  1225
- B.
  
  343
- C.
  
  2401
- D.
  
  625
Correct Answer
B. 343

Explanation
A perfect square is a number that can be expressed as the product of two equal integers. In this case, 1225 can be expressed as 35 * 35, 2401 can be expressed as 49 * 49, and 625 can be expressed as 25 * 25. However, 343 cannot be expressed as the product of two equal integers, so it is not a perfect square.

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4.

What is the reciprocal of 2?
- A.
  
  1
- B.
  
  0.2
- C.
  
  0.5
- D.
  
  0.1
Correct Answer
C. 0.5

Explanation
The reciprocal of a number is obtained by dividing 1 by that number. In this case, the reciprocal of 2 would be 1/2, which is equal to 0.5.

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5.

What is the total angle at a point?
- A.
  
  90°
- B.
  
  180°
- C.
  
  270°
- D.
  
  360°
Correct Answer
D. 360°

Explanation
The total angle at a point is 360° because a point is considered to be a single location in space and does not have any dimensions. Therefore, there are no angles to measure or add up at a point.

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6.

What does the term "sum" denote in mathematical sciences?
- A.
  
  Division
- B.
  
  Addition
- C.
  
  Multiplication
- D.
  
  Subtraction
Correct Answer
B. Addition

Explanation
The term "sum" in mathematical sciences refers to the process of adding two or more numbers together to find their total. It is a fundamental operation in arithmetic and is denoted by the symbol "+". The correct answer in this case is "Addition", as it accurately represents the meaning of the term "sum" in mathematical sciences.

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7.

What is the value of 'X' in this equation: 3X-3=0
- A.
  
  0
- B.
  
  1
- C.
  
  2
- D.
  
  3
Correct Answer
B. 1

Explanation
The value of 'X' in the equation 3X-3=0 can be found by isolating 'X' on one side of the equation. By adding 3 to both sides, we get 3X=3. Dividing both sides by 3, we find that X=1.

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8.

Which of these angles is complimentary of 78°?
- A.
  
  20°
- B.
  
  9°
- C.
  
  21°
- D.
  
  12°
Correct Answer
D. 12°

Explanation
The angle that is complementary to 78° is the angle that, when added to 78°, will result in a sum of 90°. Since 78° + 12° = 90°, the angle of 12° is the correct answer.

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9.

What is the mode of this dataset: 2,7,9,2,10,12
- A.
  
  2
- B.
  
  7
- C.
  
  9
- D.
  
  12
Correct Answer
A. 2

Explanation
The mode of a dataset is the value that appears most frequently. In this dataset, the number 2 appears twice, while all other numbers appear only once. Therefore, the mode of this dataset is 2.

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10.

Which of these is supplementary 78°?
- A.
  
  19°
- B.
  
  102°
- C.
  
  56°
- D.
  
  23°
Correct Answer
B. 102°

Explanation
Two angles are supplementary if their sum is equal to 180 degrees. In this question, we are looking for an angle that, when added to 78 degrees, will equal 180 degrees. The only angle that satisfies this condition is 102 degrees. Therefore, 102 degrees is the correct answer.

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