ΔABC में, AB और AC के मध्य बिंदु क्रमशः X और Y हैं। यदि BC + XY = 18 इकाइयाँ है, तो BC - XY का मान कितना है?

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SSC CGL 2023 Tier-I Official Paper (Held On: 19 Jul 2023 Shift 4)
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  1. 12 सेमी
  2. सेमी
  3. सेमी
  4. सेमी

Answer (Detailed Solution Below)

Option 2 : 6 सेमी
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दिया गया है : 

BC + XY = 18 इकाइयाँ

गणना : 

F1 Other Arbaz 30-10-23 D3

⇒ BC + XY = 18 इकाइयाँ

हम जानते हैं कि, XY = 1/2 BC

⇒ 1/2BC + BC = 18 

⇒ 3BC/2 = 18

⇒ BC = 12

अब, XY = 6 

इसलिए, BC - XY = 12 - 6 = 6

∴ सही उत्तर 6 सेमी है। 

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