Assertion (A) & Reason (B) MCQ

MCQ 11 Mark

Assertion (A) If $x+0=0+x=x, x$ is a rational number, then 0 is called the additive inverse of $x$.
Reason (R) Multiplicative inverse of $x$ is $\frac{1}{x}.$

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
✓
(A) is false but (R) is true

Answer

Correct option: D.

(A) is false but (R) is true

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MCQ 21 Mark

Assertion (A) For any three rational numbers $x, y$ and $z,$
$ x+(y \times z)=(x+y) \times(x+z).$
Reason (R) For any three rational numbers $a, b$ and $c$,
$ a(b+c)=a b+a c$

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
✓
(A) is false but (R) is true

Answer

Correct option: D.

(A) is false but (R) is true

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MCQ 31 Mark

Assertion (A) The multiplicative Inverse of $1.6$ is $\frac{5}{8}.$
Reason (R) The multiplicative inverse of any rational number $\frac{\text{p}}{\text{q}},$ where p and q are integers and $\text{q} \neq 0$ is $\frac{\text{-p}}{\text{q}}.$

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)
✓
(A) is true but (R) is false
D
(A) is false but (R) is true

Answer

Correct option: C.

(A) is true but (R) is false

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MATHS Assertion (A) & Reason (B) MCQ

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