Answer:
youre answer should be C
Step-by-step explanation:
hope this is helpful!
11:59 a.m to 12:59 p.m. = 13 hrs....and 12:59 p.m to 1:01 p.m = 2 minutes....so the elapsed time is 13 hrs and 2 minutes
Number defective=4
number of non-defective=total-defective
=20-4
=16
the questions asked for 1 defective
so we choose only 1 defective from 4 defective items
4C1
and for 1 non-defective
we choose only 1 non-defective from 16 non-defective items
16C1
we choose 2 items from 20 items
so 20C2
answer:
probability= [(4C1) * (16C1)] /(20C2)
=32/95
51cm / 3 X 5 = 85cm
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