MATHEMATICS quiz
Here are sample questions from the MATHEMATICS category. Think about each answer before revealing it – and then check how you'd do against real players in the app.
Is 6 a perfect number?
- No
- Yes
A perfect number is a natural number equal to the sum of all its divisors smaller than itself. 1+2+3=6.
How many minutes are 300 seconds?
5
Maria is 8 years old. Paul was 4 years ago 2 times older than Maria. How old is Paul now?
12
What is the calculating machine designed by Blaise Pascal in the 17th century called?
It was the second mechanical calculator in history, after Wilhelm Schickard's design. Pascal was about 19 when he began the project.
How many sides does a square have?
4
How many degrees do complementary angles add up to?
90
Complementary angles are two acute angles sharing a vertex and a side, whose sum equals a right angle (90 degrees).
What is the greatest common divisor of the numbers 9 and 6?
3
How many lines of symmetry does a square have?
4
How many tiles are in the most popular domino set, in which the highest value is 6 pips?
You can be off by 4.
28
The set contains every combination of numbers from 0 to 6. Tiles with the same number on both ends are doubles.
Is pi (π) a rational number?
- No
- Yes
Pi (π) is irrational, which means it cannot be written as a fraction of two integers.
How many full weeks are there in a calendar year?
You can be off by 2.
52
A year has 365 days, which is 52 weeks and one day (two days in a leap year).
How many degrees do the angles of a quadrilateral add up to?
360
Is there a number larger than all other numbers?
- No
- Yes
In mathematics, there is no number that is larger than all other numbers. You can always get a larger number by adding to a given number.
How many sides of equal length does an isosceles triangle have?
2
What is the acute angle whose sine equals 0.5?
30°
Sin 30° = 0.5.
What is the opposite of the number 0?
0
Opposite numbers are two numbers whose sum is zero.
What is the average of the numbers 5 and 7?
6
Is the hectare an SI unit?
- No
- Yes
Is 28 a perfect number?
- No
- Yes
Its divisors are 1, 2, 4, 7 and 14. Adding them up gives 28. That is why 28 is a perfect number.
What is the cosine of 90 degrees?
0
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