Among 200000 tablets in a batch, 1500 are known to be flawed, containing specks of
grease; 1260 are discolored and 900 have chipped edges. 400 tablets are both chipped and
specked. Find the probability of drawing a specked or chipped tablet.
Answers
Given : Among 200000 tablets in a batch,
1500 are known to be flawed, containing specks of grease;
1260 are discolored
900 have chipped edges
400 tablets are both chipped and specked.
To Find : the probability of drawing a specked or chipped tablet.
Solution:
specked = 1500
Discolored = 1260
Chipped edges = 900
both chipped and specked = 400
specked or chipped tablet. = specked + Chipped - both chipped and specked
= 1500 + 900 - 400
= 2000
probability of drawing a specked or chipped tablet. = 2000/200000
= 1/100
= 0.01
0.01 or 1 % is the probability of drawing a specked or chipped tablet.
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