Assertion (A): Whole numbers are commutative for addition Reason …

MCQ

Assertion (A): Whole numbers are commutative for addition
Reason (R): Rational numbers are commutative under addition and multiplication

✓

Answer

Correct option: A.

Both A and R are true and R is the correct explanation of A

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Assertion (A): The unit digit in the square of the number 1111 is 1
Reasons (R): Units digit of a number is the digit in the one’s place of the number. i.e. it is the rightmost digit of the number.

Assertion (A): The factorisation of ax²y + bxy² + cxyz is axy (ax + by + cz)
Reasons (R): The factorisation is defined as expressing or decomposing a number or an algebraic expression as a product of its prime factors or irreducible factors.

Assertion (A): $\left(x^6-1\right)\left(x^6+1\right)=x^{12}-1$.
Reason (R) : $(a-b)(a+b)=a^2-b^2$

Assertion (A): Whole numbers are not closed under subtraction
Reason (R): A rational number is a number that is in the form of $\frac{\text{p}}{\text{q}}$ where p and q are integers, and q is not equal to 0.

Directions: In the following questions, the Assertions $(A)$ and Reason(s) $(R)$ have been put forward. Read both the statements carefully and choose the correct alternative from the following: Observe the following temperature time graph and consider it as reasons for the following assertions:

Assertion (A): $7$ hours and $21$ hoursis the temperature minimum

Assertion (A): If x = 20 and y = 40, then x and y are inversely proportional.
Reasons (R): A direct proportion shows the direct the relation between two quantities. An inverse proportion shows inverse or indirect relation between two quantities.

Assertion (A): The four angles of a pentagon are 40°, 75°, 125° and 135°. The measure of the fifth angle is 155.
Reason (R): Quadrilaterals are composed of two triangles. Seeing as we know the sum of the interior angles of a triangle is 180°, it follows that the sum of the interior angles of a quadrilateral is 360°.

Directions: In the following questions, the Assertions $(A)$ and Reason$(s)$ $(R)$ have been put forward. Read both the statements carefully and choose the correct alternative from the following:
Assertion $(A)$: The one’s digit of the cube of the number $325$ is $0$
Reasons $(R)$: A cube number is a number multiplied by itself $3$ times

Assertion (A): The area of a rhombus is 60cm². One diagonal is 10cm. The other diagonal is 12cm
Reasons (R): Area of a rhombus = $\frac{1}{2}$ × d1 d1 × d2 d2 , where d1 d1 and d2 d2 are diagonals of a rhombus