Question

The half-life of Uranium-233 is 1,95,000 years that is Uranium-233 decays at a constant rate such a way that it reduces 50% in 1,95,000 years. In how many years will it reduce to 25%?

Asked in DSSSB MTS · 2026
Population Growth · Quantitative Aptitude
Exam PYQ4 Options
Quantitative AptitudePercentagePopulation GrowthConstant RateDSSSB MTS2026
💡
Quick Revision

Always identify whether the question asks for population increase, final population, or original population before applying the formula.

Correct AnswerCorrect option for this question
Option A — 3,90,000 years

Learn Population Growth in 60 Seconds

Learn how to work backward from a changed population to find the original population.

Topic Video
Everything you need to learn, practice & excel — in one place.
3,000+ Video-Based Study Material
PYQ-Based Quizzes
4,000+ Informative Audiobooks
6,300+ Full-Length Mock Tests
Daily Current Affairs
40,000+ PYQs

Questions Asked from Percentage in Previous Exams

See how often Percentage has appeared in previous-year questions across major government exams.

High Exam Frequency
43UPSC Questions Asked in These Years:2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2026
29SSC Questions Asked in These Years:2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
23Railways Questions Asked in These Years:2016, 2018, 2020, 2021, 2022, 2023, 2024, 2025, 2026
42State PSC Questions Asked in These Years:2002, 2004, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Percentage has appeared in 137 previous-year exam questions, most frequently in UPSC, State PSC and SSC.
2-Minute Revision Notes

Revise Population Growth and Its Related Concepts

Strengthen key concepts with exam-focused visual notes for faster revision.

Open Revision Notes ↗

Explore More Questions

Continue practising by chapter, topic and related subjects.

One question solved. Keep going.

Continue with the next Percentage question and build your accuracy one question at a time.