Difference between revisions of "2018 UNCO Math Contest II Problems/Problem 7"
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== Problem == | == Problem == | ||
| − | Let <math>x = | + | Let <math>x = 2^A + 10^B</math> where <math>A</math> and <math>B</math> are randomly chosen with replacement from among the |
positive integers less than or equal to twelve. What is the probability that <math>x</math> is a multiple of | positive integers less than or equal to twelve. What is the probability that <math>x</math> is a multiple of | ||
<math>12</math>? | <math>12</math>? | ||
Revision as of 08:02, 5 August 2019
Problem
Let 
where 
and 
are randomly chosen with replacement from among the
positive integers less than or equal to twelve. What is the probability that 
is a multiple of
?
Solution
See also
| 2018 UNCO Math Contest II (Problems • Answer Key • Resources) | ||
| Preceded by Problem 6 |
Followed by Problem 8 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 | ||
| All UNCO Math Contest Problems and Solutions | ||
