if a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is -.
Select the correct option
A) 2 / 10  B) 4 / 13  C) 3 / 5  D) 9 / 7  E) 1 / 4
<gadget id="calculator">3 / 52</gadget>
<output>3/52 = around 0.057692</output>

<gadget id="calculator">52 / 4</gadget>
<output>13</output>

<gadget id="calculator">13 / 52</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(3/52) + (1/4)</gadget>
<output>4/13 = around 0.307692</output>

<result>B</result>
if a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is -.
add(divide(const_3, const_52), divide(divide(const_52, const_4), const_52))
"explanation : p ( s ᴜ k ) = p ( s ) + p ( k ) - p ( s ∩ k ) , where s denotes spade and k denotes king . p ( s ᴜ k ) = 13 / 52 + 4 / 52 - 1 / 52 = 4 / 13 answer : b"