$16$ और $25$ के बीच मध्यानुपाती (mean proportional) ज्ञात कीजिए।
A$18$
B$20$
C$22$
D$24$
Answer & Solution
Correct answer: B. $20$
मध्यानुपाती $= \sqrt{a \times b} = \sqrt{16 \times 25} = \sqrt{400} = 20$.
विकल्प A (18) समांतर माध्य $(16+25)/2 \approx 20.5$ को पूर्णांकित (rounded down) करके लिखा गया है — जो निकट है, लेकिन पूछा गया गुणोत्तर माध्य नहीं है।
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