निर्देश: लुप्त श्रेणी ज्ञात कीजिए। 

12, 18, 36, 90, 270, ?

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RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 2)
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  1. 850
  2. 945
  3. 670
  4. 430
  5. 780

Answer (Detailed Solution Below)

Option 2 : 945
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गणना:

18 ÷ 12 = 1.5

36 ÷ 18 = 2

90 ÷ 36 = 2.5

270 ÷ 90 = 3

क्रमागत पदों के बीच के गुणक प्रत्येक बार 0.5 से बढ़ रहे हैं: 1.5, 2, 2.5, 3

अगला पद ज्ञात करने के लिए, 270 को 3.5 से गुणा करें (चूँकि अगला गुणक 3.5 होना चाहिए):

270 × 3.5 = 945

∴ श्रेणी में लुप्त पद 945 है।

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