General Knowledge
Brain Teasers
Math
Advanced History & Geography
African-American History
106

What is the only country that borders both the Caspian Sea and the Persian Gulf?

Iran


106

 I can be cracked, made, told, and played.

A Joke

106

What is the sum of the interior angles of a pentagon?

540 Degrees

106

What is the oldest continuously inhabited city in the world?

Damascus

106

Who was the first African American woman to travel to space?

Mae Jemison

206

What gas do plants absorb from the atmosphere

Carbon Dioxide

206

The more you take, the more you leave behind. What am I?

Footsteps

206

If f(x) = 3x^2 - 5x + 2, find f(4).

34


206

The Byzantine Empire was the continuation of which ancient empire?

The Roman Empire

206

Who is known as the “Father of Blood Banking” for his work in blood transfusions?

Dr. Charles Drew

306

What is the rarest naturally occurring element on Earth?

Astatine

306

 I speak without a mouth and hear without ears. I have no body, but I come alive with the wind. What am I?

An Echo

306

If a circle has a radius of 7, what is its circumference? 

43.96

306

What was the codename for the Allied invasion of Normandy on D-Day?

Operation Overlord

306

Who was the first African American to receive a Ph.D. from Harvard?

W.E.B. Du Bois

406

What is the name of the structure that connects the two hemispheres of the brain?

Corpus Callosum


406

 I can be written, I can be spoken, I can be broken without being touched. What am I?

A Promise

406

What is the derivative of f(x) = x^3?

 3x²

406

Which treaty ended the War of 1812 between the United States and Britain?

The Treaty of Ghent

406

Who was the leader of the Student Nonviolent Coordinating Committee (SNCC) and later became a U.S. Congressman advocating for voting rights?

John Lewis

506

What is the deepest trench in the world’s oceans?

Mariana Trench

506

The person who makes it, sells it. The person who buys it never uses it. The person who uses it never knows they’re using it. What is it?

A Coffin


506

If a person invests $1,000 at an annual interest rate of 5%, compounded yearly, how much will they have after 3 years?

$1,157.63

506

What is the term for a word that is spelled the same forwards and backwards, like “racecar”?

Palindrome

506

Who was the first Black Supreme Court Justice in U.S. history?

Thurgood Marshall