Assertion (A) & Reason (B) MCQ

MCQ 11 Mark

Assertion (A): The sum of infinite terms of a geometric progression is given by $S_{\infty}=\frac{a}{1-r}$, provided $|r|<1$.
Reason (R): The sum of n terms of Geometric progression is $S _{ n }=\frac{a\left(r^n-1\right)}{r-1}$.

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

(b) Both A and R are true but R is not the correct explanation of A.
Explanation:Both A and R are true but R is not the correct explanation of A.

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MCQ 21 Mark

Assertion (A): Let $A =\{1,2,3\}$ and $B =\{1,2,3,4\}$. Then, $A \subset B$.
Reason (R): If every element of $X$ is also an element of $Y$, then $X$ is a subset of $Y$.

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: Assertion Since, every element of A is in B , so $A \subset B$.

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Maths Assertion (A) & Reason (B) MCQ

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