Assertion (A) & Reason (B) MCQ

MCQ 11 Mark

Assertion (A): Three rational numbers between $\frac{2}{5}$ and $\frac{3}{5}$ are $\frac{9}{20}, \frac{10}{20}$ and $\frac{11}{20}$
Reason (B): A rational number between two rational numbers p and q is $\frac{1}{2}(p+q)$

A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.

Answer

(a) Both A and R are true and R is the correct explanation of A.
Explanation: Both A and R are true and R is the correct explanation of A.

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MCQ 21 Mark

Assertion (A): In $\Delta ABC$, median AD is produced to X such that $AD = DX$. Then ABXC is a parallelogram.
Reason (R): Diagonals AX and BC bisect each other at right angles.

A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.

Answer

(c) A is true but R is false.
Explanation:
In quadrilateral ABXC, we have
AD = DX [Given]
BD = DC [Given]

So, diagonals AX and BC bisect each other but not at right angles.
Therefore, ABXC is a parallelogram.

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Maths Assertion (A) & Reason (B) MCQ

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