MCQ 11 Mark
Assertion (A): A sequence is said to definite if it has finite no of terms.
Reason (R): The sequence whose $\mathrm{n}^{\text {th }}$ term if $\frac{2^{n}}{n}$ if $2,2, \frac{8}{3}, 4 \ldots$
Reason (R): The sequence whose $\mathrm{n}^{\text {th }}$ term if $\frac{2^{n}}{n}$ if $2,2, \frac{8}{3}, 4 \ldots$
- ABoth $A$ and $R$ are true and $R$ is the correct explanation of A.
- BBoth 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
View full question & answer→(b) Both A and R are true but R is not the correct explanation of A .
Explanation: Assertion is true.
Reason
Let $\mathrm{t}_{\mathrm{n}}=\frac{2^{n}}{n}$
Putting $\mathrm{n}=1,2,7$, x
$\mathrm{t}_{1}=2, \mathrm{t}_{2}=2, \mathrm{t}_{3}=\frac{8}{3}, \mathrm{t}_{4}=\mathrm{x}$
80 the sequence is $2,2, \frac{8}{3}, 4$
Reason is also correct but not the correct explanation for Assertion.
Explanation: Assertion is true.
Reason
Let $\mathrm{t}_{\mathrm{n}}=\frac{2^{n}}{n}$
Putting $\mathrm{n}=1,2,7$, x
$\mathrm{t}_{1}=2, \mathrm{t}_{2}=2, \mathrm{t}_{3}=\frac{8}{3}, \mathrm{t}_{4}=\mathrm{x}$
80 the sequence is $2,2, \frac{8}{3}, 4$
Reason is also correct but not the correct explanation for Assertion.