1919 + 20 को 18 से विभाजित करने पर कितना शेषफल प्राप्त होगा?

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SSC CGL 2022 Tier-I Official Paper (Held On : 09 Dec 2022 Shift 4)
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  1. 3
  2. 2
  3. 1
  4. 0

Answer (Detailed Solution Below)

Option 1 : 3
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दिया गया है:

1919  + 20

प्रयुक्त अवधारणा:

A ≡ B (मॉड C) का अर्थ है कि A को C से विभाजित करने पर शेषफल B प्राप्त होता है।

गणना:

हम जानते हैं,

19 ≡ 1 (मॉड 18)

⇒ 1919 ≡ 119 (मॉड 18)

⇒ 1919 ≡ 1 (मॉड 18)

जब 20 को 18 से विभाजित किया जाता है, तब शेषफल = 2

(1919 + 20) ≡ (1 + 2) (मॉड 18)

⇒ (1919 + 20) ≡ 3 (मॉड 18)

∴  1919 + 20 को 18 से विभाजित करने पर शेषफल 3 प्राप्त होता है।

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