HelpContactFor teachers and institutes
>_StemPy Lab
Mock TestsClassesGroups

>_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

  • Dashboard
  • My Content
  • Profile
  • Log in
© 2026 senLearn. All rights reserved.HelpAboutContactPrivacy PolicyTerms of UseRefund Policy

Quizzes

Quick multiple-choice questions shared by teachers and students.

+ Create a Quiz

Choose a topic to see its subtopics.

Exam:
6 quizzes
The bar chart shows how many brothers and sisters each of 25 students has. What is the median number? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
SAT
StemPy LabStemPy Lab
Hard
Five numbers have a mean of 13. Four of them are 10, 14, 9 and 15. What is the fifth number? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
SAT
StemPy LabStemPy Lab
Medium
A coaching centre has a morning batch of 20 learners, whose mean mark is 60, and an evening batch of 30, whose mean mark is 70. What is the mean mark of all 50 learners? New
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
SAT
StemPy LabStemPy Lab
Hard
In a month, the 4 windy days had a mean highest temperature of 18 °C and the 16 calm days 22 °C. What is the mean of all 20 days?
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
SAT
StemPy LabStemPy Lab
Hard
Nine values have a mean of 20. A tenth value, 30, is added. What is the new mean?
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
SAT
StemPy LabStemPy Lab
Hard
In a club, 15 boys have a mean mass of 40 kg and 10 girls have a mean mass of 35 kg. What is the mean mass of all 25 members?
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode
SAT
StemPy LabStemPy Lab
Hard