a box contains 8 pairs of shoes ( 16 shoes in total ). if two shoes are selected at random, what it is the probability that they are matching shoes?	Choose the most appropriate option:	A) 1 / 190	B) 1 / 20	C) 1 / 19	D) 1 / 10	E) 1 / 15
<gadget id="calculator">16 - 1</gadget>
<output>15</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<result>E</result>
a box contains 8 pairs of shoes ( 16 shoes in total ). if two shoes are selected at random, what it is the probability that they are matching shoes?
divide(const_1, subtract(16, const_1))
"the problem with your solution is that we do n ' t choose 1 shoe from 16 , but rather choose the needed one after we just took one and need the second to be the pair of it . so , the probability would simply be : 1 / 1 * 1 / 15 ( as after taking one at random there are 15 shoes left and only one is the pair of the first one ) = 1 / 15 answer : e ."