ABCDE is a regular pentagon with F at its center. How many different quadrilaterals can be formed by joining 4 of the points A,B,C,D,E and F?
Correct answer: D
Explanation
The number of polygons with k sides that can be formed by joining them is nCk
for quadrilaterals k=4
it has 6 sides n=6
6C4=15
Answer is D
Loading…
Searched on YouTube by reporting category, not by question text. Open this search on YouTube →
Source: Algebra word problems from the AQuA-RAT dataset (Ling et al., 2017), published by Google DeepMind under the Apache License 2.0.
Go to the official source →
AQuA-RAT items are crowdsourced algebra problems, not ACT questions. They carry five answer choices in the pre-2025 ACT Mathematics style and no ACT reporting category. Useful for drilling Preparing for Higher Math content; not a substitute for a real form.