यदि (a_n=n(n+2)) है, तो तीसरा पद क्या होगा?
If (a_n=n(n+2)), what is the third term?
Explanation opens after your attempt
B. (15)
Concept
(a_3=3(3+2)=15). In exams, simplify inside the bracket first.
Why this answer is correct
The correct answer is B. (15). (a_3=3(3+2)=15). In exams, simplify inside the bracket first.
Exam Tip
(a_3=3(3+2)=15) है। परीक्षा में कोष्ठक के अंदर पहले सरल करें।
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