3 years ago

A box contains

1 answer:

5 0

Box 1 : 3 pencils + 7 pens = total of 10
probability of picking a pen is 7/10

box 2 : 3 pencils + 3 crayons = total of 6
probability of picking a crayon is 3/6 which reduces to 1/2

probability of picking both is (7/10 * 1/2) = 7/20 <==

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