EM-2914

Complementary events

E Math · Secondary 4 · Hard · Complementary events

A box contains 3 green, 4 yellow and 5 black pens. Three pens are chosen at random without replacement. Find the probability that at least one of the three pens is black.

$\dfrac{37}{44}$
$\dfrac{7}{44}$
$\dfrac{3}{11}$
$\dfrac{5}{12}$

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