thumbnail

The Professor's Riddles

Professor Layton is known for being one of the best puzzle game series, with puzzles to make people both young and old think. Can you answer these 10 riddles from it?
EVERY ANSWER IS A NUMBER
Quiz by PeppyPenguin
Rate:
Last updated: September 3, 2022
You have not attempted this quiz yet.
First submittedSeptember 3, 2022
Times taken8
Average score60.0%
Report this quizReport
7:30
Enter answer here
0
 / 10 guessed
The quiz is paused. You have remaining.
Scoring
You scored / = %
This beats or equals % of test takers also scored 100%
The average score is
Your high score is
Your fastest time is
Keep scrolling down for answers and more stats ...
Riddle
Answer
Imagine a digital clock. How many times will the clock display three or more of the same number in a row over the course of one day?

In case you were wondering, the clock in this puzzle displays time on a 12-hour scale, not on military time.
34 Times
Alfred and Roland have been hired by a farm to sow flower seeds. They've been assigned a 10-acre plot of land and split it in half so they can work independently. Roland starts from the east and Alfred from the west.

Alfred can plow the land at a rate of 20 minutes per acre. Roland takes 40 minutes to plow, but sows seeds at three times the speed Alfred does.

If sowing seeds on the 10-acre plot pays $100, how much of that money should go to Roland?
$50
While walking through a market on holiday, you notice a small stand selling cameras. A camera and case set is selling for £310. The merchant tells you that the camera costs £300 more than the case itself and that the case costs the price of the set minus the cost of the camera.
You decide to just buy the case without the camera. You hand the merchant £100. How much change should you get back?
£95
Five cats can catch five mice in five minutes.

With that in mind, how many cats does it take to catch 100 mice in 100 minutes?
5 Cats
A train with a length of 100m takes 30 seconds to travel over a 400m bridge.

Assuming that the train's speed is constant, how many kilometres per hour is it travelling at?
60km/h
Riddle
Answer
Arrange 9 unique numbers between 1 and 51 so that every vertical, horizontal and diagonal line of numbers crossing through the middle square has the same sum.

Arrange the numbers so that they yield the highest possible sum.

What number occupies the middle square?
51
A glass jar holds a single germ. After one minute, the germ splits into two germs. One minute after that, the two germs each split again, forming a total of four germs. Continuing at this rate, a single germ can multiply to fill the whole jar in exactly one hour.

Knowing this, how long in minutes would it take to fill the jar if you had started with two germs?
59 Minutes
Ten candles stand burning in a dining room. A strong breeze blows in through an open window and extinguishes two of them. Checking back in on the candles later, you see that one more candle has gone out. To make sure no more flames go out, you shut the window. Assuming the wind doesn't extinguish any more candles, how many candles do you have left in the end?
3 Candles
SOS! Fifteen people are trapped aboard a ship that's going to sink in exactly 20 minutes. Their only chance for survival is the five-person life raft stowed on their vessel. To make matters worse, the waters around the ship are teeming with man-eating sharks, so swimming to safety is out of the question.

A round-trip to the nearest island and back to the ship takes nine minutes on the raft. How many people will live to see dry land?
13 People
Three boys are talking about how many sweets they each have.

A: B has the most!
B: If C gave me one sweet, I'd have twice as many as A does.
C: It'd be better if B gave me two sweets. Then we'd all have the same amount!

How many sweets are there in total?
9 Sweets
1 Comments
+2
Level 85
Sep 3, 2022
Fun tricky questions! Got caught out by a couple and had to think again.