Question
Download Solution PDFउस विकल्प का चयन कीजिए जो चौथे पद से उसी प्रकार संबंधित है जैसे पहला पद दूसरे पद से संबंधित है और पांचवाँ पद छठे पद से संबंधित है।
10 : 45 :: ? : 28 :: 11 : 55
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFतर्क : (प्रथम संख्या ÷ 2) × (प्रथम संख्या - 1) = द्वितीय संख्या
10 : 45 →
⇒ (10/2) × (10 -1) = 5 × 9 = 45
और,
11 : 55 →
⇒ (11/2) × (11 -1) = (11/2) × 10 = 11 × 5 = 55
इसी प्रकार,
? : 28 →
⇒ (x/2) × (x -1) = 28
⇒ x(x - 1) = 56
⇒ x2 - x - 56 = 0
⇒ (x - 8)(x + 7) = 0
⇒ x = या तो 8 या -7
चूँकि मान यहाँ ऋणात्मक नहीं हो सकता। इसलिए सही मान 8 होगा।
अतः, सही उत्तर "8" है।
Last updated on Jul 19, 2025
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