Question

If the product of the HCF and LCM of two distinct numbers is the cube of one of the numbers, then which of the following statements is/are correct?I. The difference of the numbers is an even number.II. One of the numbers is a perfect square.Select the answer using the code given below.

Asked in UPSC CSAT · 2026
LCM and HCF · Quantitative Aptitude
Exam PYQ4 Options
Quantitative AptitudeNumber SystemLCM and HCFLCM and HCF BothUPSC CSAT2026
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Quick Revision

When counting possible number pairs, use only co-prime factor pairs of LCM/HCF.

Correct AnswerCorrect option for this question
Option C — Both I and II

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Questions Asked from HCF & LCM Word Problems in Previous Exams

See how often HCF & LCM Word Problems has appeared in previous-year questions across major government exams.

High Exam Frequency
12UPSC Questions Asked in These Years:2010, 2011, 2013, 2014, 2016, 2017, 2020, 2021, 2022, 2023, 2024, 2026
9SSC Questions Asked in These Years:2016, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
8Railways Questions Asked in These Years:2016, 2018, 2020, 2021, 2022, 2024, 2025, 2026
11State PSC Questions Asked in These Years:2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
HCF & LCM Word Problems has appeared in 40 previous-year exam questions, most frequently in UPSC, State PSC and SSC.
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