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Questions number $19$ and $20$ are Assertion and Reason based questions. Two statements are given, one labelled as Assertion (A) and the other is labelled as Reason (R). Select the correct answer to these questions from the codes (A), (B), (C) and (D) as given below.
(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
(B) Both Assertion (A) and Reason (R) are true, but Reason (R) is
textbf{not} the correct explanation of the Assertion (A).
(C) Assertion (A) is true, but Reason (R) is false.
(D) Assertion (A) is false, but Reason (R) is true.
Assertion (A): Common difference of the AP : $5, 1, -3, -7, ...$ is $4$.
Reason (R): Common difference of the AP : $a_1, a_2, a_3, ..., a_n$ is obtained by $d = a_n - a_{n-1}$
(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
(B) Both Assertion (A) and Reason (R) are true, but Reason (R) is
textbf{not} the correct explanation of the Assertion (A).
(C) Assertion (A) is true, but Reason (R) is false.
(D) Assertion (A) is false, but Reason (R) is true.
Assertion (A): Common difference of the AP : $5, 1, -3, -7, ...$ is $4$.
Reason (R): Common difference of the AP : $a_1, a_2, a_3, ..., a_n$ is obtained by $d = a_n - a_{n-1}$
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(D) Assertion (A) is false, but Reason (R) is true.