यदि (a,b,c) अंकगणितीय श्रेणी में हैं और (a=-6), (c=18), तो (b-a) कितना है?

If (a,b,c) are in an arithmetic progression and (a=-6), (c=18), what is (b-a)?

Explanation opens after your attempt
Correct Answer

C. (12)

Step 1

Concept

The middle term is \(b=\frac{-6+18}{2}=6\), so (b-a=6-(-6)=12). In three terms, the middle term is the average.

Step 2

Why this answer is correct

The correct answer is C. (12). The middle term is \(b=\frac{-6+18}{2}=6\), so (b-a=6-(-6)=12). In three terms, the middle term is the average.

Step 3

Exam Tip

मध्य पद \(b=\frac{-6+18}{2}=6\), इसलिए (b-a=6-(-6)=12)। तीन पदों में मध्य पद औसत होता है।

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यदि (a,b,c) अंकगणितीय श्रेणी में हैं और (a=-6), (c=18), तो (b-a) कितना है? / If (a,b,c) are in an arithmetic progression and (a=-6), (c=18), what is (b-a)?

Correct Answer: C. (12). Explanation: मध्य पद \(b=\frac{-6+18}{2}=6\), इसलिए (b-a=6-(-6)=12)। तीन पदों में मध्य पद औसत होता है। / The middle term is \(b=\frac{-6+18}{2}=6\), so (b-a=6-(-6)=12). In three terms, the middle term is the average.

Which concept should I revise for this Mathematics MCQ?

The middle term is \(b=\frac{-6+18}{2}=6\), so (b-a=6-(-6)=12). In three terms, the middle term is the average.

What exam hint can help solve this Mathematics question?

मध्य पद \(b=\frac{-6+18}{2}=6\), इसलिए (b-a=6-(-6)=12)। तीन पदों में मध्य पद औसत होता है।