an urn contains 6 red, 5 blue and 2 green marbles. if 2 marbles are picked at random, what is the probability that both are red?  Choose the correct answer:	A) 6 / 13	B) 5 / 26	C) 6 / 26	D) 9 / 26	E) 10 / 27
<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">6 + 5</gadget>
<output>11</output>

<gadget id="calculator">11 + 2</gadget>
<output>13</output>

<gadget id="calculator">13 - 1</gadget>
<output>12</output>

<gadget id="calculator">13 * 12</gadget>
<output>156</output>

<gadget id="calculator">156 / 2</gadget>
<output>78</output>

<gadget id="calculator">15 / 78</gadget>
<output>5/26 = around 0.192308</output>

<result>B</result>
an urn contains 6 red, 5 blue and 2 green marbles. if 2 marbles are picked at random, what is the probability that both are red?
divide(divide(multiply(6, 5), const_2), divide(multiply(add(add(6, 5), 2), subtract(add(add(6, 5), 2), const_1)), const_2))
option ( b ) is correct p ( both are red ) , 6 c 2 / 13 c 2 = 5 / 26 answer b