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There are exactly 13 coins in a bag: 4 pennies, 2 nickels, 3

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Carcass
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There are exactly 13 coins in a bag: 4 pennies, 2 nickels, 3 [#permalink] New post   22 Oct 2020, 07:28
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There are exactly 13 coins in a bag: 4 pennies, 2 nickels, 3 dimes, and the rest are quarters. One coin is selected at random from the bag.

Quantity A
Quantity B
A: The probability that the selected coin is a quarter
A: The probability that the selected coin is a penny



A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.

Source: 320 GRE Math Questions
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C
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rcpacheco
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Re: There are exactly 13 coins in a bag: 4 pennies, 2 nickels, 3 [#permalink] New post   22 Oct 2020, 14:49
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Carcass wrote:
There are exactly 13 coins in a bag: 4 pennies, 2 nickels, 3 dimes, and the rest are quarters. One coin is selected at random from the bag.

Quantity A
Quantity B
A: The probability that the selected coin is a quarter
A: The probability that the selected coin is a penny



A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.

Source: 320 GRE Math Questions


First, discover the number of quarteres. There are 13-4-2-3=4 quarters.
A = Probability of selecting a quarter = 4/13.
B = Probability of selecting a penny = 4/13

A=B so answer is C.
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Re: There are exactly 13 coins in a bag: 4 pennies, 2 nickels, 3 [#permalink] New post   26 Oct 2020, 02:47
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Since the number of pennies and quarters are the same (4 each) the probability of choosing either from the bag of coins is also the same. So we choose C.
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Re: There are exactly 13 coins in a bag: 4 pennies, 2 nickels, 3 [#permalink] New post   04 Jun 2021, 16:35
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Both are 4/13
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Re: There are exactly 13 coins in a bag: 4 pennies, 2 nickels, 3 [#permalink]
04 Jun 2021, 16:35
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