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Test your knowledge on various topics in general mathematics.
1
48 random squares
What is the value of pi to two decimal places?
0.1299999999999999 —
3.14
— 4.15
61% got this right
Pi is an irrational number commonly approximated as 3.14.
2
48 random squares
What is the square root of 64?
6 —
8
— 11
69% got this right
The square root of 64 is 8, as 8 times 8 equals 64.
3
48 random squares
How many degrees are in a right angle?
87 —
90
— 91
85% got this right
A right angle is exactly 90 degrees.
4
48 random squares
What is the value of 2 to the power of 3?
6 —
8
— 11
74% got this right
2 to the power of 3 means 2 multiplied by itself three times.
5
48 random squares
What is the perimeter of a square with side length 5?
19 —
20
— 23
42% got this right
The perimeter of a square is 4 times the side length.
6
48 random squares
What is the sum of the angles in a triangle?
176 —
180
— 183
86% got this right
The sum of the angles in any triangle is always 180 degrees.
7
48 random squares
What is the value of 10 factorial (10!)?
3628796 —
3628800
— 3628803
59% got this right
10 factorial is the product of all positive integers up to 10.
8
48 random squares
What is the hypotenuse of a right triangle with sides 3 and 4?
2 —
5
— 10
66% got this right
The hypotenuse is found using the Pythagorean theorem.
9
48 random squares
What is the area of a circle with radius 7?
149.93 —
153.94
— 156.95
46% got this right
Area of a circle is pi times the radius squared.
10
48 random squares
What is the derivative of x^2?
2x
1
3
X
62% got this right
The derivative of x^n is n*x^(n-1).
11
48 random squares
What is the value of the golden ratio to two decimal places?
1.61 —
1.62
— 2.63
12% got this right
The golden ratio is approximately 1.618.
12
48 random squares
What is the value of e to two decimal places?
2.71 —
2.72
— 5.73
32% got this right
The number e is the base of the natural logarithm.
