दोन धन संख्यांची बेरीज 240 आहे आणि त्यांचा मसावि 15 आहे. दिलेल्या स्थितीचे समाधान करणाऱ्या संख्या-जोड्यांची संख्या शोधा.

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SSC CGL Tier 2 Quant Previous Paper 3 (Held On: 18 November 2020)
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  1. 8
  2. 2
  3. 4
  4. 5

Answer (Detailed Solution Below)

Option 3 : 4
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दिलेले आहे:

दोन धन संख्यांची बेरीज 240 आहे आणि त्यांचा मसावि 15 आहे. 

गणना:

समजा दोन धन संख्या 15x आणि 15y आहेत.

प्रश्नानुसार

संख्यांची बेरीज

⇒ 15x + 15y = 240

⇒ x + y = 16

आता, आपल्याला अशा संख्या-जोड्यांची संख्या शोधायची आहे ज्यामध्ये दोन संख्यांची बेरीज 16 आहे परंतु त्यांच्यामध्ये कोणताही सामाईक अवयव नाही. अशा संख्या-जोड्या खालीलप्रमाणे आहे

⇒ (1, 15) (3, 13) (5, 11) (7, 9)

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