Assertion (A) & Reason (B) MCQ

MCQ 11 Mark

Assertion (A) The value of $593 \times 607$ is 359951 .
Reason (R) $(a+b)(a-b)=a^2-b^2$.

✓
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

Correct option: A.

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

MCQ 21 Mark

Assertion (A) To factorise $a x^2+b x+c$, write $b$ as sum of two numbers whose product is ac.
Reason (R) $3 x^2+x-1=(x+1)(3 x-2)+1$

✓
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

Correct option: A.

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

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MCQ 31 Mark

Assertion (A) A factor which occurs in each term is called the common factor.
Reason (R) Expression $x^2-7 x+12$ has $(x-3)$ as a common factor.

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 41 Mark

Assertion (A) The common factor of $a^2 m^4$ and $a^4 m^2$ is $a^2 m^4$.
Reason (R) A common factor is a number that can be divided into two different numbers, without leaving a remainder.

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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MATHS Assertion (A) & Reason (B) MCQ

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