JEE Main 2025 — Probability Question with Solution
From: JEE Main 2025 (Online) 2nd April Morning Shift
Question
Three distinct numbers are selected randomly from the set . If the probability, that the selected numbers are in an increasing G.P., is , then is equal to __________ .
Enter your answer
Show full solutionCorrect answer: 4949
Correct answer
4949
Step-by-step explanation
| Common ratio | Last triplet | Total |
|---|---|---|
| r = 2 | 10, 20, 40 | 10 |
| r = 3 | 4, 12, 36 | 4 |
| r = 4 | 2, 8, 32 | 2 |
| r = 5 | 1, 5, 25 | 1 |
| r = 6 | 1, 6, 36 | 1 |
| Total = 18 | ||
Total choices
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Probability chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2025, covering the Probability chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.