2024 AMC 10B Problems/Problem 8: Difference between revisions
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==Problem 8== | |||
Let <math>N</math> be the product of all the positive integer divisors of <math>42</math>. What is the units digit | |||
of <math>N</math>? | |||
<math>\textbf{(A) } 0\qquad\textbf{(B) } 2\qquad\textbf{(C) } 4\qquad\textbf{(D) } 6\qquad\textbf{(E) } 8</math> | |||
==Solution 1== | |||
The factors of <math>42</math> are: <math>1, 2, 3, 6, 7, 14, 21, 42</math>. Multiply unit digits to get D) 6 | |||
Revision as of 00:46, 14 November 2024
Problem 8
Let 
be the product of all the positive integer divisors of 
. What is the units digit
of ?
Solution 1
The factors of are: 
. Multiply unit digits to get D) 6
