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Questions and Answers
Which of the following is a prime number?
Which of the following is a prime number?
- 27
- 17 (correct)
- 24
- 15
What is the value of $5(7 + 3)$?
What is the value of $5(7 + 3)$?
- 35
- 50 (correct)
- 25
- 40
What is the sum of the interior angles of a triangle?
What is the sum of the interior angles of a triangle?
- 360 degrees
- 270 degrees
- 180 degrees (correct)
- 90 degrees
Which of the following is a rational number?
Which of the following is a rational number?
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Study Notes
Prime Numbers
- A prime number is a whole number greater than 1 that has exactly two factors: 1 and itself.
Algebra
- The value of $5(7 + 3)$ can be evaluated by following the order of operations (PEMDAS): first, evaluate the expression inside the parentheses ($7 + 3 = 10$), then multiply 5 by the result ($5 * 10 = 50$).
- Therefore, the value of $5(7 + 3)$ is 50.
Geometry
- The sum of the interior angles of a triangle is 180 degrees.
Rational Numbers
- A rational number is a number that can be expressed as the quotient or fraction of two integers, i.e., a number that can be written in the form a/b, where a and b are integers and b is non-zero.
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