MCQ 11 Mark
Assertion (A): If $S_n$ is the sum of the first $n$ terms of an A.P., then its $n^{\text {th }}$ term $a_n$ is given by $a_n=S_n-S_{n-1}$
Reason (R): The $10^{\text {th }}$ term of the A.P. $5,8,11,14, \ldots$ is 35
Reason (R): The $10^{\text {th }}$ term of the A.P. $5,8,11,14, \ldots$ is 35
- 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.
- ✓A is true but R is false.
- DA is false but R is true.
Answer
View full question & answer→Correct option: C.
A is true but R is false.
(C) A is true but R is false.
Explanation: $a_{10}=a+9 d$
= 5 + 9(3) = 5 + 27 = 32
Explanation: $a_{10}=a+9 d$
= 5 + 9(3) = 5 + 27 = 32