Question
Simplify: √(121 × 49) + √(64 × 36) - √(100 × 16)
Asked in RRB Group D · 2026
Surds and Indices · Quantitative Aptitude
Exam PYQ4 Options
Exam Tip
For surds, take perfect-square factors outside the root. For example, √75 = √(25 × 3) = 5√3.
Correct AnswerCorrect option for this question
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Questions Asked from Surds and Indices in Previous Exams
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12UPSC Questions Asked in These Years:2011, 2012, 2013, 2014, 2015, 2018, 2019, 2020, 2021, 2022, 2023, 2026
10SSC Questions Asked in These Years:2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
7Railways Questions Asked in These Years:2016, 2018, 2021, 2022, 2024, 2025, 2026
16State PSC Questions Asked in These Years:2002, 2004, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
45 exam questions have been mapped to this exact video topic, with the highest frequency in State PSC, UPSC and SSC.
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