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50 Trivia Questions Only Geniuses Will Get Right

From tricky riddles to U.S. trivia to mind-boggling math puzzles, see how you fare against these challenging trivia questions.

only US state that only borders one otherNicole Fornabaio/rd.com

Trivia question #1:


A. Rhode Island

B. Maine

C. Washington

D. Florida

Colorful detail map macro close up with push pins marking locations throughout the United States of America Maine MEKent Weakley/Shutterstock

Answer: B. Maine

Maine shares a border only with New Hampshire (and Canada). Maine also has another distinction as well—it's the only state with a one-syllable name. Here's some trivia you never knew about each of the 50 states.

name the number thatNicole Fornabaio/rd.com

Trivia question #2:

Name the number that is three more than one-fifth of one-tenth of one-half of 5,000.

A. 503

B. 103

C. 53

D. 108

House number fifty-three 53 on enamel plaque in white on blue background from FranceEdwardsMediaOnline/Shutterstock

Answer: C. 53

Work backward! Half of 5,000 is 2,500. One-tenth of that is 250. One-fifth of that is 50. Add three, and you've got your answer.

number patternNicole Fornabaio/rd.com

Trivia question #3:


What's the missing number?

A. 20

B. 21

C. 25

D. 17

ceramics house number on the wall twenty onespartakas/Shutterstock

Answer: B. 21

Each number is the previous two numbers added together. The eighth number is the sixth and seventh numbers—8 and 13—added together. If you can figure these trivia questions out, see if you can solve this tricky math puzzle.

oldest continuously inhabited cityNicole Fornabaio/rd.com

Trivia question #4:


A. Istanbul, Turkey

B. Athens, Greece

C. Jerusalem

D. Damascus, Syria

day panoramic view of the umayyad mosque under the blue sky and white clouds. showing the islamic architecture and islamic art in this holy place in damascus syria.mohammad alzain/Shutterstock

Answer: D. Damascus, Syria

Evidence of civilization in Damascus dates all the way back to 9000 BC. Do you know what the oldest city in the United States is?

find the distanceNicole Fornabaio/rd.com

Trivia question #5:

Two people are standing back to back. They each walk away from each other for three feet. Then they both turn left and walk for another four feet, and then stop. Now, how many feet apart are they standing?

A. 10

B. 7

C. 25

D. 5

Number 10 / ten, decorative tiles on white surface.daguimagery/Shutterstock

Answer: A. 10

If you remember the a2 + b2 = c2 rule from math class, that's what'll help you solve this problem. This rule states that if you have a triangle, the sum of the squares of the two shorter sides equals the square of the longest side. And in this problem, the walkers' paths form parts of triangles. You may want a pencil and paper to "draw out" this problem and visualize the triangles.

Draw two lines labeled "three feet" for the distance they walk away from each other. Then draw two lines labeled "four feet," going in opposite directions, for the distance they walked after their left turns. Now draw a line connecting the points at the ends of those lines (representing where the people are now). This line represents the distance you're trying to figure out.

Now, you've got two triangles touching at the corners. Two sides of each are 3 feet and 4 feet (the distances each person walked). The unknown sides represent two halves of the distance you're trying to find. So break out that Pythagorean Theorem: Three is a, 4 is b. 32 + 42 =  9 + 16 = 25 = c2. Take the square root of 25 and you get 5, which is the longest side of these mini-triangles. Five feet is half of the distance between the people. Five times two is ten! Here's another three-sided puzzler: Try to figure out how many triangles are in this image.

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