अनुक्रम \(-5,-1,3,7,\ldots\) में (25)वाँ पद क्या है?
What is the (25)th term of the sequence \(-5,-1,3,7,\ldots\)?
Explanation opens after your attempt
B. (91)
Concept
(a_n=-5+4(n-1)), so \(a_{25}=-5+96=91\). Exam tip: handle the sign of a negative first term carefully.
Why this answer is correct
The correct answer is B. (91). (a_n=-5+4(n-1)), so \(a_{25}=-5+96=91\). Exam tip: handle the sign of a negative first term carefully.
Exam Tip
(a_n=-5+4(n-1)) है इसलिए \(a_{25}=-5+96=91\) है। ऋणात्मक पहले पद में संकेत सावधानी से रखें।
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