Brand Logo
Login
Search
Brand Logo

Edzy for Classes 6-12

Edzy is a personal AI tutor for CBSE and State Board students, with curriculum-aligned guidance, practice, revision, and study plans that adapt to each learner.

  • Email: always@edzy.ai
  • Phone: +91 96256 68472
  • WhatsApp: +91 96256 68472
  • Address: Sector 63, Gurgaon, Haryana

Follow Edzy

Browse by Class

  • CBSE Class 6
  • CBSE Class 7
  • CBSE Class 8
  • CBSE Class 9
  • CBSE Class 10
  • CBSE Class 11
  • CBSE Class 12
Explore the CBSE resource hub

Explore Edzy

  • Study Resources
  • Free Study Tools
  • Best Apps for Board Exams
  • Edzy vs ChatGPT
  • About Us
  • Why We Built Edzy
  • Blog
  • CBSE AI Tutor

Support & Legal

  • Help & FAQs
  • Accessibility
  • Privacy Policy
  • Terms & Conditions
  • Refund Policy
  • Cookie Policy
  • Site Directory

© 2026 Edzy. All rights reserved.

Curriculum-aligned learning paths for students in Classes 6-12.

TD
Question Practice

If you know that the mean of the first four numbers is 15, what must be true for a fifth number to maintain the mean?

Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.

MCQ_SA
CBSE
Class 8
Mathematics
Ganita Prakash Part II
Tales by Dots and Lines
Question Bank

If you know that the mean of t...

Single Answer MCQ
Q-00133928

If you know that the mean of the first four numbers is 15, what must be true for a fifth number to maintain the mean?

1

Anything above 15

2

Anything below 15

3

Equal to 15

4

Depends on total sum

Previous QuestionNext Question
Keep Practising

Students who asked this also explored

Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.

Q1.

What is the mean of the numbers 4, 8, and 12?

Single Answer MCQ
View explanation
Q2.

Which of the following represents a characteristic of the mean?

Single Answer MCQ
View explanation
Q3.

If the mean of the data set {5, 10, 15, 20} is 12.5, which statement is true?

Single Answer MCQ
View explanation
Q4.

What happens to the mean if a new number much larger than the current mean is added?

Single Answer MCQ
View explanation