List all the 4 digit even numbers that can be created by rearranging these number tiles 1658
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For an even no. last digit needs to be even = 4 choices
Total 4 digit even numbers = (Total even numbers) - (Total 3 digit even numbers)
Total even numbers: 4⋅6⋅5⋅4=480
Total 3-digit even numbers: 3⋅5⋅4⋅1=60
Total 4-digit even numbers: 480−60=420
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