Which of the following are real numbers? Multi-select Choices: (A)9 (B) (C)7.78 (D)2

Define Real Numbers: Define what a real number is. A real number is any number that can be found on the number line. This includes both rational numbers (such as integers and fractions) and irrational numbers (numbers that cannot be expressed as a simple fraction, such as the square root of 2). Real numbers can be positive, negative, or zero.Evaluate Choice (A): Evaluate choice (A) which is the number 9. The number 9 is an integer, and all integers are real numbers because they can be located on the number line.Evaluate Choice (B): Evaluate choice (B) which is not provided in the problem. Since there is no number provided for choice (B), we cannot evaluate it. It seems to be a mistake in the problem statement.

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Which of the following are real numbers? $\newline$ Multi-select Choices: $\newline$ (A) $9$ $\newline$ (B) $\newline$ (C) $7.78$ $\newline$ (D) $2$

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Q. Which of the following are real numbers?

\newline

Multi-select Choices:

\newline

(A)

9

\newline

(B)

\newline

(C)

7.78

\newline

(D)

2

Define Real Numbers: Define what a real number is. $\newline$ A real number is any number that can be found on the number line. This includes both rational numbers (such as integers and fractions) and irrational numbers (numbers that cannot be expressed as a simple fraction, such as the square root of $2$ ). Real numbers can be positive, negative, or zero.
Evaluate Choice (A): Evaluate choice (A) which is the number $9$ . $\newline$ The number $9$ is an integer, and all integers are real numbers because they can be located on the number line.
Evaluate Choice (B): Evaluate choice (B) which is not provided in the problem. $\newline$ Since there is no number provided for choice (B), we cannot evaluate it. It seems to be a mistake in the problem statement.