Question 1/10
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A scientist is experimenting with bacteria that are one micron in diameter and that reproduce by dividing every minute into two bacteria. At 12:00 PM, she puts a single organism in a container. At precisely 1:00 PM, the container is full. At what time was the container half full?
12:59 PM
1:59 PM
1:05 PM
Question 2/10
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If one and a half hens lay one and a half eggs in one and a half days, how many eggs does one hen lay in one day?
2/3
5
2
Question 3/10
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People were asked to guess how many peas there were in a jar. No one guessed correctly, but the nearest guesses were 163, 169, 178 and 182. One of the numbers was one off, one was three off, one was ten off and the other sixteen off. How many peas were there in the jar?
182 peas
179 peas
164 peas
Question 4/10
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25 people enter the picnic race. But the track is narrow and only 5 can race at a time. No one has a stopwatch. How many races do you need to decide 1st, 2nd and 3rd?
7
3
5
Question 5/10
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Think of a 6-digit number. The sum of the digits is 43. And only two of the following three statements about the number are true: it's a square number, it's a cube number, and the number is under 500000.
489850
499839
499849
Question 6/10
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There were 100 chocolates in a box. The box was passed down along a row of people. The first person took one chocolate. Each person down the row took more chocolates than the person before, until the box was empty. What is the largest number of people that could have been in the row?
13
15
12
Question 7/10
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How many squares are there on a chess board?
200
206
204
Question 8/10
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What is unique about 8549176320 ?
It is the digits 0 to 9 in Greek numeric order
It is the digits 0 to 9 in size order
It is the digits 0 to 9 in alphabeitcal order
Question 9/10
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When asked about his birthday, a man said: "The day before yesterday I was only 25 and next year I will turn 28." This is true only one day in a year - when was he born?
December 31st
January 1st
February 29th
Question 10/10
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What 5-digit number has the following features: If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number.
41857
42857
41982
While you might have a logical mind when it comes to regular puzzles, math puzzles can leave you feeling a bit stumped! Fret not, by taking this quiz you challenged your mind and left your comfort zone.
C+, Number Catastrophe
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Right!
Based on the results of this quiz you've truly got a mind built for solving logical math puzzles! you can easily dismantle a problem and put it back together in a way that makes complete sense. Well done!
B+, Number Nifty
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Right!
Based on the results of this quiz you are a true logic master! There's not a single kind of logic puzzle that you can't quickly problem solve or dismantle with your quick mind! Go ahead and give yourself a pat on the back!
A+, Logic Master
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Right!
Check Your Answers
Play Again
Do you think you've got what it takes to quickly pass 12 logic number puzzles? It might not be as easy as you think! Let's put your math knowledge to the test once and for all!
1
A scientist is experimenting with bacteria that are one micron in diameter and that reproduce by dividing every minute into two bacteria. At 12:00 PM, she puts a single organism in a container. At precisely 1:00 PM, the container is full. At what time was the container half full?
12:59 PM
1:59 PM
1:05 PM
2
If one and a half hens lay one and a half eggs in one and a half days, how many eggs does one hen lay in one day?
2/3
5
2
3
People were asked to guess how many peas there were in a jar. No one guessed correctly, but the nearest guesses were 163, 169, 178 and 182. One of the numbers was one off, one was three off, one was ten off and the other sixteen off. How many peas were there in the jar?
182 peas
179 peas
164 peas
4
25 people enter the picnic race. But the track is narrow and only 5 can race at a time. No one has a stopwatch. How many races do you need to decide 1st, 2nd and 3rd?
7
3
5
5
Think of a 6-digit number. The sum of the digits is 43. And only two of the following three statements about the number are true: it's a square number, it's a cube number, and the number is under 500000.
489850
499839
499849
6
There were 100 chocolates in a box. The box was passed down along a row of people. The first person took one chocolate. Each person down the row took more chocolates than the person before, until the box was empty. What is the largest number of people that could have been in the row?
13
15
12
7
How many squares are there on a chess board?
200
206
204
8
What is unique about 8549176320 ?
It is the digits 0 to 9 in Greek numeric order
It is the digits 0 to 9 in size order
It is the digits 0 to 9 in alphabeitcal order
9
When asked about his birthday, a man said: "The day before yesterday I was only 25 and next year I will turn 28." This is true only one day in a year - when was he born?
December 31st
January 1st
February 29th
10
What 5-digit number has the following features: If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number.
41857
42857
41982
