# Problems

1 – 22 of 22
 Problem Title Likes Solvers Difficulty

#### Problem 2591. Does the coin touch the line?

Created by: Georges

3

36

#### Problem 1287. Unique dice configurations

Created by: James

3

28

#### Problem 3056. Chess probability

Created by: Jean-Marie Sainthillier

Tags chess, elo

5

349

#### Problem 648. Cumulative probability of finding an unlikely combination

Created by: Doug Hull

Tags ml101

2

32

#### Problem 1267. Calculate the probability that at least two people in a group share the same birthday.

Created by: Jeremy

4

80

#### Problem 44277. Given n, create n random numbers such that their standard deviation is also n.

Created by: AMITAVA BISWAS

3

74

#### Problem 1159. Coin Tossing: Probability of Same Heads for N tosses

Created by: Richard Zapor

1

44

Created by: Omer

2

25

#### Problem 43575. Probabilities - More brains than luck

Created by: Massimo Zanetti

1

16

Created by: Ken

Tags math

4

46

#### Problem 1272. The almost-birthday problem.

Created by: Claudio Gelmi

1

22

#### Problem 42670. If you prick us, do we not bleed?

Created by: James

1

22

#### Problem 226. What are the odds?

Created by: Matt Fig

2

26

#### Problem 42503. Generating random matrix with given probability mass function

Created by: Peng Liu

2

33

#### Problem 597. The Birthday Phenomenon

Created by: Ben Ausdenmoore

5

152

#### Problem 1959. German tank problem

Created by: Alfonso Nieto-Castanon

4

27

#### Problem 2995. Test Driven Solution - Probability Problem 1

Created by: Jonathan

1

14

#### Problem 44451. Rate of event occurence: find percentiles of the distribution (for smallish rates)

Created by: David Verrelli

2

10

#### Problem 44676. Mean = Standard Deviation

Created by: Mehmet OZC

4

7

#### Problem 44630. Guess the number I'm thinking of (Part 1)

Created by: David Verrelli

12

43

Created by: Erin

7

86

#### Problem 44779. Don't be mean. Be nice!

Created by: James

Tags mean, nchoosek

2

27

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