यदि समान्तर श्रेणी \(u-9,u-1,u+7,\ldots\) का (29)वां पद (295) है, तो (u) का मान क्या होगा?
If the (29)th term of the AP \(u-9,u-1,u+7,\ldots\) is (295), what is the value of (u)?
Explanation opens after your attempt
D. (80)
Concept
Here (d=8). \(295=u-9+28\times8=u+215\), so (u=80).
Why this answer is correct
The correct answer is D. (80). Here (d=8). \(295=u-9+28\times8=u+215\), so (u=80).
Exam Tip
यहां (d=8)। \(295=u-9+28\times8=u+215\), इसलिए (u=80)।
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