Permutation With Repetition Calculator
How many 4 digit PINs are possible?
10 choices for 4 ordered positions gives 10,000.
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Exact answers to common counting and probability questions
Each answer page uses the same values in the question, result, worked steps, and calculator link so the result is easy to verify.
Probability Calculator
What is the probability of drawing a red card from a standard deck?
The probability is 1/2, which is 0.5 or 50%.
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What is the probability of at least 2 aces in a 5 card hand?
The probability of at least 2 successes is 4.1684%.
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What is 6 choose 3?
6 choose 3 without repeats is 20.
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What is 13!?
13! is 6,227,020,800.
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How many 5 digit PINs are possible?
10 choices for 5 ordered positions gives 100,000.
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What is the probability of drawing a king from a standard deck?
The probability is 1/13, which is 0.076923 or 7.6923%.
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What is the probability of at least 2 heads in 5 coin flips?
The probability of at least 2 successes is 81.25%.
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What is the probability of drawing exactly 3 aces in a 5 card hand?
The probability of exactly 3 successes is 0.1736%.
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What is 21C6?
The binomial coefficient C(21, 6) is 54,264.
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How many 7 scoop combinations can you make from 3 flavours if repeats are allowed?
3 choose 7 with repeats allowed is 36.
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What is 12!?
12! is 479,001,600.
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What is the probability of drawing a face card from a standard deck?
The probability is 3/13, which is 0.230769 or 23.0769%.
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What is the probability of exactly 4 heads in 6 coin flips?
The probability of exactly 4 successes is 23.4375%.
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What is the probability of at most 1 ace in a 5 card hand?
The probability of at most 1 success is 95.8316%.
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What is 20C4?
The binomial coefficient C(20, 4) is 4,845.
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What is 14P4?
14 permute 4 without repeats is 24,024.
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How many 12 digit PINs are possible?
10 choices for 12 ordered positions gives 1,000,000,000,000.
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