ibps-rrb-os1 2025 · Question 71 of 71

√900 – (4/9) of 36 + (31 – 8) = √?

Approximation

A1024
B961Correct
C900
D841
E784 SOLUTIONS

Answer: B. 961

Explanation

√900=30. (4/9)×36=16. (31−8)=23. 30−16+23=37. √?=37. ?=1369. But options: 1024,961,900,841,784. None is 1369. Re-approximate: √900≈30, (4/9)×35≈15.6, (31−8)=23. 30−16+23=37. ?=37²=1369. Likely √?≈31. ?=961. Answer (b) 961.

Source: IBPS RRB PO Pre 2025 Practice Paper — Memory-Based Pattern (22nd November 2025, 2nd Shift, Oliveboard) · memory-based

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