{# dataLayer and gtag are defined unconditionally: roughly fifteen gtag() calls live in payment and landing templates, and they would throw a ReferenceError if the function disappeared. With no tag script loaded the queued commands just sit in the array and never leave the browser. #}
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Question 41

Let $$S=\{1,2,3,\dots,10\}$$. Consider the set

$$X=\{R:R\text{ is an equivalence relation on the set }S\text{ such that }R\text{ has exactly 42 elements}\}.$$

Then the number of elements in $$X$$ is ___.


Correct Answer: 2520.00

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