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Stevbo Stevbo
wrote...
Posts: 100
Rep: 0 0
7 years ago
Accepted characters: numbers, decimal point markers (period or comma), sign indicators (-),
spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific
notation). NOTE: For scientific notation, a period MUST be used as the decimal point
marker.
Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly
stated values.
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.

An urn contains 12 balls identical in every respect except their color. There are 3 red balls, 7
green balls, and 2 blue balls. You draw two balls from the urn, but replace the first ball before
drawing the second. Find the probability that the first ball drawn is red and the second ball
drawn is green. Place your answer, rounded to 4 decimal places, in the blank. For example,
0.4567 would be a legitimate entry.
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Replies
wrote...
Educator
7 years ago
3/12 * 7/12 = 21/144
21/144 = 0.145833333.....
rounded to four decimal places = 0.1458
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