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MCQ Questions of 8th Class

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Q1) Which of the following statements is false ?

(A) Natural numbers are closed under addition
(B) Whole numbers are closed under addition
(C) Integers are closed under addition
(D) Rational numbers are not closed under addition.

Q2) Which of the following statements is false ?

(A) Natural numbers are closed under subtraction
(B) Whole numbers are not closed under subtraction
(C) Integers are closed under subtraction
(D) Rational numbers are closed under subtraction.

Q3) Which of the following statements is true ?

(A) Natural numbers are closed under multiplication
(B) Whole numbers are not closed under multiplication
(C) Integers are not closed under multiplication
(D) Rational numbers are not closed under multiplication.

Q4) Which of the following statements is true ?

(A) Natural numbers are closed under division
(B) Whole numbers are not closed under division
(C) Integers are closed under division
(D) Rational numbers are closed under division.

Q5) Which of the following statements is false ?

(A) Natural numbers are commutative for addition
(B) Whole numbers are commutative for addition
(C) Integers are not commutative for addition
(D) Rational numbers are commutative for addition.

Q6) Which of the following statements is true ?

(A) Natural numbers are commutative for subtraction
(B) Whole numbers are commutative for subtraction
(C) Integers are commutative for subtraction
(D) Rational numbers are not commutative for subtraction.

Q7) Which of the following statements is false ?

(A) Natural numbers are commutative for multiplication
(B) Whole numbers are commutative for multiplication
(C) Integers are not commutative for multiplication
(D) Rational numbers are commutative for multiplication

Q8) Which of the following statements is true ?

(A) Natural numbers are commutative for division
(B) Whole numbers are not commutative for division
(C) Integers are commutative for division
(D) Rational numbers are commutative for division.

Q9) Which of the following statements is true ?

(A) Natural numbers are associative for addition
(B) Whole numbers are not associative for addition
(C) Integers are not associative for addition
(D) Rational numbers are not associative for addition.

Q10) Which of the following statements is true ?

(A) Natural numbers are associative for subtraction
(B) Whole numbers are not associative for subtraction
(C) Integers are associative for subtraction
(D) Rational numbers are associative for subtraction.