Assertion (A) & Reason (B) MCQ

MCQ 11 Mark

Assertion (A): Sum of natural number from 1 to 100 is 5050.
Reason (R): Sum of n natural number is $\frac{n(n+1)}{2}$.

✓
Both A and R are true and R is the correct
B
Both $A$ and $R$ are true but $R$ is not the explanation of A . 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

(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 a solid hemisphere of radius 10 cm , a right cone of same radius is removed out. The volume of the remaining solid is $523.33 cm^3$ [Take $\pi=3.14$ and $\sqrt{2}=1.4$ ]
Reason (R): Expression used here to calculate volume of remaining solid = Volume of hemisphere - Volume of cone

A
Both A and R are true and R is the correct
B
Both $A$ and $R$ are true but $R$ is not the explanation of A . 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.

(D) A is false but R is true.
Explanation: A is false but R is true.

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Maths Assertion (A) & Reason (B) MCQ

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