उन सभी 3 अंकों की संख्याओं का योगफल ज्ञात कीजिए, जिन्हें 6 से विभाजित करने पर शेषफल 4 रहता है।

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UP Police SI (दरोगा) Official PYP (Held On: 14 Nov 2021 Shift 3)
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  1. 84050
  2. 82050
  3. 83050
  4. 81050

Answer (Detailed Solution Below)

Option 2 : 82050
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UP Police SI (दरोगा) Official PYP (Held On: 2 Dec 2021 Shift 1)
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दिया गया है:

3 अंकों की संख्याएँ, जिन्हें 6 से भाग देने पर शेषफल 4 बचता है।

प्रथम पद (a) = 100

अंतिम पद (l) = 994

उभयनिष्ठ अंतर (d) = 6

प्रयुक्त सूत्र:

पदों की संख्या (n) = \(\dfrac{l-a}{d} + 1\)

योग = \(\dfrac{n}{2} \times (a + l)\)

गणना:

पदों की संख्या (n):

⇒ n = \(\dfrac{994-100}{6} + 1 = \dfrac{894}{6} + 1\) = 149 + 1 = 150

⇒ योग = \(\dfrac{150}{2} \times (100 + 994) \)

⇒ योग = \(75 \times 1094 = 82050\)

∴ योग = 82050

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