CTET PAPER II 2018 · PYQ · Rational Numbers · easy
The numerical expression 3/7 + (-7/8) = -25/56 shows that—
Answer
The correct answer is A: rational numbers are closed under addition. The expression shows the addition of two rational numbers 3/7 and -7/8, resulting in another rational number -25/56. This demonstrates the closure property of rational numbers under addition - the sum of two rational numbers is always a rational number.
A.rational numbers are closed under addition✓ Correct
B.rational numbers are closed under subtraction
C.rational numbers are closed under multiplication
D.rational numbers are closed under division
Explanation
The expression shows the addition of two rational numbers 3/7 and -7/8, resulting in another rational number -25/56. This demonstrates the closure property of rational numbers under addition - the sum of two rational numbers is always a rational number. Closure property states that performing an operation on members of a set always results in another member of the same set.
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