Cutiepie55561
14.05.2021 •
Mathematics
A coin jar contains 10 quarters, 6 dimes and 8 nickels. Find the probability that two quarters are chosen random from the jar.
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Ответ:
0.1630
Step-by-step explanation:
Number of quarters = 10
Number of dimes = 6
Number of nickels = 8
Total number = 10+6+8 = 24
Probability of choosing the first quarter will be: = Number of quarters/Total number of money
= 10/24 = 5/12
Since a quarter has been selected, the total number will reduce to 23 the next time a quarter is choosing and the number of quarters will now be 9. Therefore, the probability of choosing the second quarter will be: = 9/23
Therefore, the probability that two quarters are chosen random from the jar will be:
= 5/12 × 9/23
= 45/276
= 0.1630
Ответ: