alleryतीन संख्याएँ 10, x, 30 समांतर श्रेणी में हैं। x का मान क्या है?
A15
B25
C22
D20
Answer & Solution
Correct answer: D. 20
समांतर श्रेणी में तीन संख्याओं का मध्य पद दोनों बाह्य पदों का औसत होता है: (10 + 30) / 2 = 20।
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