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2 results found for "ap-symmetric-hard" in Class 10.

Question Hard Mathematics Arithmetic Progressions (AP) Finding the $n$th term of an AP Class 10 Level 65

यदि समान्तर श्रेणी में \(a_4+a_{14}=98\) है तो \(a_9\) का मान क्या होगा?

If in an AP \(a_4+a_{14}=98\), what is the value of \(a_9\)?

Explanation opens after your attempt
Correct Answer

B. (49)

Step 1

Concept

\(a_9\) is the middle term between \(a_4\) and \(a_{14}\). So \(a_9=\frac{98}{2}=49\).

Step 2

Why this answer is correct

The correct answer is B. (49). \(a_9\) is the middle term between \(a_4\) and \(a_{14}\). So \(a_9=\frac{98}{2}=49\).

Step 3

Exam Tip

\(a_4\) और \(a_{14}\) के बीच का पद \(a_9\) है। इसलिए \(a_9=\frac{98}{2}=49\)।

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Question Hard Mathematics Arithmetic Progressions (AP) Finding the $n$th term of an AP Class 10 Level 64

यदि समान्तर श्रेणी में \(a_3+a_9=72\) है तो \(a_6\) का मान क्या होगा?

If in an AP \(a_3+a_9=72\), what is the value of \(a_6\)?

Explanation opens after your attempt
Correct Answer

C. (36)

Step 1

Concept

\(a_6\) is the middle term between \(a_3\) and \(a_9\). So \(a_6=\frac{72}{2}=36\).

Step 2

Why this answer is correct

The correct answer is C. (36). \(a_6\) is the middle term between \(a_3\) and \(a_9\). So \(a_6=\frac{72}{2}=36\).

Step 3

Exam Tip

\(a_3\) और \(a_9\) के बीच का पद \(a_6\) है। इसलिए \(a_6=\frac{72}{2}=36\)।

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