alleryতিনিটা সংখ্যা 10, x, 30 সমান্তৰ প্ৰগতিত আছে। x-ৰ মান কি?
A15
B25
C22
D20
Answer & Solution
Correct answer: D. 20
সমান্তৰ প্ৰগতিত থকা তিনিটা পদৰ মধ্য পদটো হ'ল কাষৰ দুটাৰ গড়, (10 + 30) / 2 = 20।
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