RRB NTPC (Undergraduate)13 Jun 2026Shift 3Algebra

The sum of two positive numbers is 51 and their product is 230. The positive difference between them is:

दो धनात्मक संख्याओं का योगफल 51 है और उनका गुणनफल (Product) 230 है। उनके बीच का धनात्मक अंतर ज्ञात कीजिए।

Answer और ExplanationAnswer and explanation

Answer: (B) 41

(a − b)2 = 512 − 4 × 230 = 2601 − 920 = 1681
✓
अंतर 41 है।
(a − b)2 = 512 − 4 × 230 = 2601 − 920 = 1681
✓
The difference is 41.

Source: RRB NTPC (Undergraduate) · 13 Jun 2026 · Shift 3। Solution: Prashant Sir, Vijayastra।Source: RRB NTPC (Undergraduate) · 13 Jun 2026 · Shift 3. Solution by Prashant Sir, from Vijayastra.