Excel in math and science

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Your answer seems reasonable. Find out if you're right!

That seems reasonable. Find out if you're right!

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Quantitative Finance

Introduction to Fixed Income

Concept Quizzes

Interest Rate

Challenge Quizzes

Level 1-2

Introduction to Fixed Income: Level 1-2 Challenges

A Treasury bill is one of the safest investments in the bond market.

False True

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by Chung Kevin

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Alex invested $1000 at 10% annual interest, compounded annually.
Brian invested $2000 at 5% annual interest, compounded annually.

After 2 years, how much more interest did Alex earn than Brian?

-$3 $1 $5 -$1 $0 $3 -$5

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by Chung Kevin

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RAC is offering a Presidents Day (US holiday) special on a Samsung Galaxy.

You can choose between 2 payment plans:
1) 78 weekly worry-free payments of $29.99 each week, starting today.
2) A one-time payment of $829.00 due in 90 days.

Assuming that you want to buy this phone, what is the minimum (positive) daily interest rate that would make a person be indifferent between these payment plans?

0.01% 0.1% 1% 10% 100% None of the rest

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by Calvin Lin

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10-year treasuries are currently yielding 3%. ABC issued a new 10-year bond with a A+ rating, and it has a 6% yield. What is the implied probability of ABC defaulting on the bond?

2.91% 3.00% 2.83% 2.00%

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by Calvin Lin

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If your former high school math teacher opens a bank and loans you $1000 at 10% monthly interest (compounded monthly), which of the following is the closest to the amount that you would owe after a year?

Image credit: smbc-comics.com

\[ $ 1000 \pi \] \[ $1000 \] \[ $ 1000 e \] \[ $ 2200 \]

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by Calvin Lin

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Introduction to Fixed Income

Concept Quizzes

Challenge Quizzes

Introduction to Fixed Income: Level 1-2 Challenges

Image credit: smbc-comics.com

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.