Digital ACT Practice Questions
Access 905 official-caliber practice questions. Filter by subject or difficulty to pinpoint your cognitive blind spots.
In a triangular suspension bridge truss, structural engineers map three survey markers $A$, $B$, and $C$. The distance from $A$ to $C$ is $6\text{ feet}$, the d...
In a flight path between two regional waypoints, air traffic controllers map three survey markers $A$, $B$, and $C$. The distance from $A$ to $C$ is $8\text{ mi...
A sample of Iodine-131, commonly utilized as a medical imaging radiotracer, exhibits an initial radioactivity of $640\text{ megabecquerels (MBq)}$. The half-lif...
A sample of Phosphorus-32, commonly utilized as a molecular biology genetic probe, exhibits an initial radioactivity of $960\text{ megabecquerels (MBq)}$. The h...
A sample of Sodium-24, commonly utilized as a industrial pipeline leak detector, exhibits an initial radioactivity of $800\text{ megabecquerels (MBq)}$. The hal...
A sample of Bismuth-212, commonly utilized as a alpha-radiation targeted therapy, exhibits an initial radioactivity of $1280\text{ megabecquerels (MBq)}$. The h...
A sample of Radon-222, commonly utilized as a subterranean geological tracer, exhibits an initial radioactivity of $1600\text{ megabecquerels (MBq)}$. The half-...
In a forensic DNA investigation, a molecular geneticist conducts Polymerase Chain Reaction (PCR) amplification on a short tandem repeat (STR) locus. The sample ...
In a ancient genomic paleontology lab, a molecular geneticist conducts Polymerase Chain Reaction (PCR) amplification on a Neanderthal mitochondrial fragment. Th...
In a viral epidemiology diagnostic clinic, a molecular geneticist conducts Polymerase Chain Reaction (PCR) amplification on a RNA-derived cDNA target sequence. ...
An astrophysicist measures the hydrogen absorption spectrum from Star Alpha. The rest laboratory wavelength for the designated spectral line is $\lambda_0 = 656...
What is the domain of the real-valued function $f(x) = \frac{\sqrt{4x - 12}}{x - 7}$?...
In a geometric sequence of positive real numbers, the third term is $18$ and the sixth term is $486$. What is the first term of this sequence?...
If $\tan(\alpha) = \frac{4}{3}$ and $\pi < \alpha < \frac{3\pi}{2}$, what is the value of $\sin(2\alpha)$?...
A circle in the standard $(x,y)$-coordinate plane has the equation $x^2 + y^2 - 6x + 8y - 11 = 0$. What is the length of the radius of this circle?...
How many integers between $100$ and $999$, inclusive, are divisible by both $6$ and $9$?...
If $\log_{10}(x) = 2$ and $\log_{10}(y) = -3$, what is the value of $\log_{10}\left(\frac{100x^3}{\sqrt{y}}\right)$?...
What is the area, in square units, of the triangle in the standard $(x,y)$-coordinate plane with vertices at $(0, 0)$, $(6, 2)$, and $(4, 8)$?...
A fair six-sided die is rolled three times. What is the probability that the numbers rolled strictly increase (that is, the second roll is greater than the firs...
If the polynomial $f(x) = x^3 - 3x^2 + 4x - 12$ has a real root at $x = 3$, what are the other two roots of $f(x)$?...
In $\triangle XYZ$, the measure of $\angle X$ is $45^\circ$, the measure of $\angle Y$ is $30^\circ$, and the side opposite $\angle Y$ has length $10\sqrt{2}$. ...
The municipal transit authority [____] several alternative routes before approving the downtown subway expansion....
Neither the head coach nor the team captains [____] pleased with the controversial referee ruling during the third quarter....
The archaeological site yielded several well-preserved bronze spearheads [____] however, the surrounding pottery shards had deteriorated severely....
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