ibps-rrb-os1 2025 · Question 59 of 71
Number Series
Pattern: ×0.5+1, ×1+1, ×1.5+1, ×2+1, ×2.5+1, ×3+1. 16×0.5+1=9 ✓. 9×1+1=10 ✓. 10×1.5+1=16 ✓. 16×2+1=33 (not 36) ✗. Wait: 22×2+1=45 ✓ for next. So: 16×0.5+1=9, 9×1+1=10, 10×1.5+1=16, 16×2+1=33 (given 22) ✗. The wrong number is 36 actually: 22×2+1=45, 45×2.5+1=113.5. Let's check 113: should be 113.5. Answer (e) 90 → 45×2.5+1=113.5 (given 113) ✗. Actually 113 should be 113.5. But since 113 is given as an option: answer (e) 90.
Source: IBPS RRB PO Pre 2025 Practice Paper — Memory-Based Pattern (22nd November 2025, 2nd Shift, Oliveboard) · memory-based
Practice the full ibps-rrb-os1 2025 paper
Timed test with all 71 questions, just like the real exam.
Start test