Since its the beginning the U.S mint has produced over 288.7 billion pennies.
2 answers:
Answer:
A penny/coin is 0.75 inches in diameter.
A.
When 288.7 billion pennies are lined up they will form = 216.525 billion inches.
If you want to convert it to miles, this is 3417376.89 miles as 1 billion inch = 15782.82 miles.
B.
The mint currently makes about 30 million pennies a day.
Now we have 3600 seconds in an hour.
So, we have seconds in 1 day.
So, 30 million pennies are made in 86400 seconds.
In 1 second, =347.22 rounded to 347 pennies per second.
Now assuming 365 days in a year, this becomes
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See the attached picture. You'll find a tree with four branches at level 1 (each of the four sectors of the spinner). Each of these branches is divided in four sub-branches: the possible results of tossing two coins (HH, HT, TH, TT).
So, there are 16 possible outcomes (numbered below each leaf).
If you want to roll an odd number, you have to take branch 1 or 3 at first level.
Then, for each of those, you have to toss exactly one head, so you have to take HT or TH.
The good outcomes are thus 2, 3, 10 and 11, leading to a probability of 4/16=1/4=25%.
