Selection Post Phase XIV (12th)18 Sep 2026Shift 2Algebra

If K36 + 1K18 = 11, then find the value of K72 + 1K36.

यदि K36 + 1K18 = 11 है, तो K72 + 1K36 का मान ज्ञात कीजिए।

Answer और ExplanationAnswer and explanation

Answer: (B) 119

हर पद (Term) को K18 से भाग दो: K18 + 1K18 = 11
अभीष्ट मान = K36 + 1K36 = (K18 + 1K18)2 − 2
= 112 − 2 = 121 − 2 = 119
✓
उत्तर 119 है।
Divide each term by K18: K18 + 1K18 = 11
Required value = K36 + 1K36 = (K18 + 1K18)2 − 2
= 112 − 2 = 121 − 2 = 119
✓
The answer is 119.

Source: Selection Post Phase XIV (12th) · 18 Sep 2026 · Shift 2। Solution: Prashant Sir, Vijayastra।Source: Selection Post Phase XIV (12th) · 18 Sep 2026 · Shift 2. Solution by Prashant Sir, from Vijayastra.