Q. Which of the following are rational numbers?Multi-select Choices:(A) −10(B) 21(C) 2(D) 0
Define rational number: Define a rational number. A rational number is any number that can be expressed as the quotient or fractions" target="_blank" class="backlink">fraction qp of two integers, where q=0. Rational numbers include integers, fractions, and terminating or repeating decimals.
Evaluate −10: Evaluate choice (A) –10.The number –10 is an integer, and all integers are rational because they can be expressed as a fraction where the denominator is 1(–10/1).
Evaluate 21: Evaluate choice (B) 21.The number 21 is already in the form of a fraction with integers in the numerator and denominator, and the denominator is not zero. Therefore, 21 is a rational number.
Evaluate 2: Evaluate choice (C) 2. The number 2 is an integer, and as previously stated, all integers are rational because they can be expressed as a fraction with a denominator of 1 (2/1).
Evaluate 0: Evaluate choice (D) 0. The number 0 is an integer, and it is rational because it can be expressed as 10, which is a valid fraction with an integer numerator and a non-zero integer denominator.