Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Find the sum of the first 15 terms of the series: 5 + 10 + 15 + ...
💡 Hint: Use the formula for the arithmetic series.
Question 2
Easy
Identify whether the sequence 3, 6, 12, 24 is arithmetic or geometric.
💡 Hint: Look at the pattern between the numbers.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the formula for the sum of the first n terms of an arithmetic series?
- S_n = a(n + 1)
- S_n = n(a + l)/2
- S_n = a(1 - r^n)/(1 - r)
💡 Hint: Think about how you can calculate totals of evenly spaced numbers.
Question 2
Is the common ratio in a geometric series allowed to be 1?
- True
- False
💡 Hint: Consider what happens if you keep multiplying by 1.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A company is planning a loyalty program where customers earn bonuses. If a customer earns an initial bonus of $10 and this bonus doubles every month, what is the total bonus after 6 months?
💡 Hint: This is a geometric series.
Question 2
You have a starting salary of $3,000 that increases by $500 every year. What is your total salary over the next 5 years?
💡 Hint: This involves an arithmetic series.
Challenge and get performance evaluation