College Math CLEP Prep Practice Exam

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What type of number is the square root of 144?

Natural
Irrational
Rational
Integers

The correct answer is: Irrational

The square root of 144 is an irrational number, which means that it cannot be expressed as a fraction of two integers. This is because the square root of 144 equals 12, which is a whole number and not a recurring decimal. Option A, natural numbers, includes only counting numbers and does not include decimals or fractions. Option C, rational numbers, includes all fractions and decimals that can be expressed as a ratio of two integers, but the square root of 144 is not a fraction. Option D, integers, includes both positive and negative whole numbers, but the square root of 144 is a positive number. Therefore, the answer is B, irrational.