Among the 10 products, there are 9 genuine products and 1 defective product. If one product is chosen at random, what is the probability that it is a defective product?
在10件产品中，有9件正品，一件次品，现从中任取一件产品，是次品的可能性是多少
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>