Help Contact For teachers and institutes

Mock Tests Classes

StemPy Lab

Learn. Solve. Code the solutions. Test yourself.

Live examsFree mock exams, timed and rankedEveryone starts together, and your score and rank come the moment it ends.See the exams →

Learn

Physics
Chemistry
Mathematics
Biology
Python Programming
Statistics & Data Science
Classes
Groups

Practice

Problems
Quizzes
Mock Tests
Prepare for an Exam
Question Sets
Exams
Certificates
Python Labs
AI Practice Generator
Student-Created Tests

Community

Discussions
Resources
Notes
Blog

Account

Log in

© 2026 senLearn. All rights reserved.Help About Contact Privacy Policy Terms of Use Refund Policy

In a village of 600 adults, 360 own a phone, 240 own a… | StemPy Lab

Quizzes
In a village of 600 adults, 360 own a phone, 240 own a bicycle and 150 own both. An adult is chosen at random and is found to own a bicycle. What is the probability that this adult also owns a phone?

MathematicsEasyHigh School (11–12)Statistics and Probability › Conditional Probability and Bayes' Theorem AP A-Level IB

Created by StemPy Lab

In a village of $600$ adults, $360$ own a phone, $240$ own a bicycle and $150$ own both. An adult is chosen at random and is found to own a bicycle. What is the probability that this adult also owns a phone?

← All Quizzes

← Zara has two fair coins in a closed box. She shakes the box, and her brother sees through a small window that the first coin lies tails up. What is the chance that both coins lie tails up?At a café, 60% of the customers order a drink, and 35% of the customers who order a drink also order a cake. What percentage of all customers order both a drink and a cake? →

More onStatistics and Probability › Conditional Probability and Bayes' Theorem

Discussion (0)

Log in to join the discussion.

Loading…

More questions on this topic

Three cards are in a hat. One card is red on both sides. One card is white on both sides. The…Advanced
A game show has three doors, with a prize behind one. A contestant picks door 1. The host does not…Hard
A visitor knocks at the door of a house with two children. One of the two children, chosen at…Hard
A laboratory screens samples for a contaminant that is present in 5% of them. The screen is…Hard
A test for a rare illness has sensitivity 0.94 and specificity 0.94. A student says, 'If I test…Medium

All questions on this topic →

Problems on this topic

In a game, a prize is hidden behind one of five doors, chosen at random…Advanced
A trace left at a scene is traced to a town of 20 000 people…Hard
A test for an infection is positive for 95% of the people who have it…Medium
A bag holds two coins. One is fair. The other has a head on both sides…Medium

All problems on this topic →