Question

To which subsets of the real numbers does the number (square root) 42 belong?
A. whole numbers,natural numbers, integers
B.irrational numbers
C. rational numbers
D. whole numbers,integers,rational numbers

Answer 1

B.
\(\sqrt{42}\) is irrational, so it would belong to the irrational numbers.

Answer 2

KingGeorge is correct. The square root of 42 is definitely not a whole number, therefore it cannot be A or D. Since it cannot be written as a fraction or nonrepeating decimal either, it is irrational and thus Choice B.