निम्नलिखित में से कौन-सा विकल्प सह-अभाज्य संख्याओं का युग्म है?

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RRB Group D 12 Sept 2022 Shift 2 Official Paper
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  1. 52, 24
  2. 363, 77
  3. 455, 49
  4. 81, 16

Answer (Detailed Solution Below)

Option 4 : 81, 16
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RRB Group D Full Test 1
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प्रयुक्त अवधारणा

सह-अभाज्य - वे संख्याएँ जिनमें 1 के अतिरिक्त कोई भी उभयनिष्ठ गुणनखंड नहीं होता है।

गणना

(52,24): दोनों में 2 एक उभयनिष्ठ गुणनखंड है, इसलिए यह सह-अभाज्य नहीं है।

(363,77): दोनों में 11 एक उभयनिष्ठ गुणनखंड है, इसलिए यह सह-अभाज्य नहीं है।

(455,49) दोनों में 7 एक उभयनिष्ठ गुणनखंड है, इसलिए यह सह-अभाज्य नहीं है।

(81,16): उनमें 1 को छोड़कर कोई उभयनिष्ठ गुणनखंड नहीं है, इसलिए यह सह-अभाज्य है। 

सही उत्तर (81,16) है। 

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