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Two stacks of ten cards each are numbered 1-10 and randomly
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29 Oct 2017, 02:15
29 Oct 2017, 02:15
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Question Stats:
67% (00:56) correct
32% (00:35) wrong based on 31 sessions
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Two stacks of ten cards each are numbered 1-10 and randomly shuffled. Sam has to pick the top card from each stack and guess the number on each card. What is the probability that Sam guesses both numbers correctly?
A. 0.001
B. 0.025
C. 0.01
D. 0.02
E. 0.50
Kudos for correct solution.
A. 0.001
B. 0.025
C. 0.01
D. 0.02
E. 0.50
Kudos for correct solution.
Re: Two stacks of ten cards each are numbered 1-10 and randomly
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30 Oct 2017, 09:29
30 Oct 2017, 09:29
1
The probability of correctly guessing two cards from two decks of 10 cards consequently is \(\frac{1}{10}\frac{1}{10} = \frac{1}{100} = 0.01\).
Answer C
Answer C
Re: Two stacks of ten cards each are numbered 1-10 and randomly
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05 Jan 2019, 01:23
05 Jan 2019, 01:23
Expert Reply
Just remember, both stacks are separate from one another. which means that their probabilities are independent.
This is equivalent to flipping a coin at the same time as rolling a dice.
you just multiply the probabilities together.
1/10*1/10= .01
This is equivalent to flipping a coin at the same time as rolling a dice.
you just multiply the probabilities together.
1/10*1/10= .01
