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Displaying problems 1 - 10 of 107 in total
Problem 1138 - Coin Throwing
- Solution Verified
You and your friend are walking down a hall. You notice that the floor is tiled with 3 inch by 3 inch square tiles. Your friend takes ...
Solve it!
Solve it!
3 correct answers,
6 tries,
1 commented solution
, 3 solvers:
(ilduderino)
(guest)
(mueschel)
(Show all user statistics)
Submitted by (Amorydai) on August 22 2010 | Discuss
Submitted by (Amorydai) on August 22 2010 | Discuss
Problem 1136 - Bacteria
- Solution Not Verified
You start out with one single bacterium. For this generation, and all thereafter, the probability that an individual bacterium will ...
Solve it!
Solve it!
0 correct answers,
3 tries,
1 commented solution
Submitted by (Amorydai) on August 22 2010 | Discuss
Submitted by (Amorydai) on August 22 2010 | Discuss
Problem 1099 - average grade
- Solution Verified
Mr. Kost has 20 students in his morning class and 30 students in his afternoon class. He gave the same test to both classes. The ...
Solve it!
Solve it!
10 correct answers,
17 tries,
1 commented solution
, 9 solvers:
(llang)
(guest)
(csilviu)
(Amorydai)
Nirmal Kirtisinghe (nirmalsuki)
(lucky99)
(Lenntz)
(mihainex)
(Luther)
(Show all user statistics)
Submitted by (ilduderino) on August 03 2010 | Discuss
Submitted by (ilduderino) on August 03 2010 | Discuss
Problem 1089 - socks
- Solution Verified
If you have black socks and brown socks in your drawer, mixed in a ratio of 4 to 5, how many socks will you have to take out to make ...
Solve it!
Solve it!
15 correct answers,
17 tries,
1 commented solution
, 10 solvers:
(mueschel)
(Amorydai)
(tylerftz)
Pradeep Kumbhashi (Deepzk)
Ionut (ionut.o)
(Northwolves)
(llang)
Kyle Lacy (olbaldy77)
(lucky99)
(csilviu)
(Show all user statistics)
Submitted by (ilduderino) on July 23 2010 | Discuss
Submitted by (ilduderino) on July 23 2010 | Discuss
Problem 1084 - 4 balls in an urn
- Solution Not Verified
You have an urn with four balls of different colors. Randomly you draw two at a time, then painting the first ball to match the ...
Solve it!
1 correct answer,
3 tries,
1 commented solution
, 1 solver:
(Amorydai)
(Show all user statistics)
Submitted by (ilduderino) on July 14 2010 | Discuss
Submitted by (ilduderino) on July 14 2010 | Discuss
Problem 1082 - ant and spider
- Solution Not Verified
An ant and a blind spider are on opposite corners of a cube. The ant is stationary and the spider moves at random from one corner ...
Solve it!
Solve it!
1 correct answer,
7 tries,
0 commented solutions
, 1 solver:
(Amorydai)
(Show all user statistics)
Submitted by (ilduderino) on July 14 2010 | Discuss
Submitted by (ilduderino) on July 14 2010 | Discuss
Problem 1064 - gambler
- Solution Verified
A gambler has in his pocket a fair coin and a two-headed coin. He selects a coin at random and flips it twice. If he gets two heads, ...
Solve it!
Solve it!
14 correct answers,
43 tries,
1 commented solution
, 10 solvers:
(Amorydai)
(guest)
(bobbygriffin)
Gaurav (justgiig8)
(kamallohia)
Sergey Salnikov (SergejKiller)
(pennypecker)
(llang)
(stephisto)
(xiaofan)
(Show all user statistics)
Submitted by (ilduderino) on June 28 2010 | Discuss
Submitted by (ilduderino) on June 28 2010 | Discuss
Problem 1048 - 10 white marbles
- Solution Verified
You are given a bag containing ten white marbles. You draw one out and replace it with a black marble. You then repeat the process, ...
Solve it!
Solve it!
3 correct answers,
18 tries,
1 commented solution
, 3 solvers:
(kamallohia)
(Northwolves)
(Amorydai)
(Show all user statistics)
Submitted by Joe (work) on June 02 2010 | Discuss
Submitted by Joe (work) on June 02 2010 | Discuss
Problem 1045 - Boys and Girls
- Solution Verified
There are two boys and two girls. Each boy (resp. girl) is randomly asking a girl (resp. boy) on a date and when matching, they will ...
Solve it!
Solve it!
5 correct answers,
34 tries,
1 commented solution
, 5 solvers:
(kamallohia)
(llang)
Akshay Dixit (akshaydixi)
(Amorydai)
(xiaofan)
(Show all user statistics)
Submitted by Joe (work) on June 02 2010 | 1 Comment
Submitted by Joe (work) on June 02 2010 | 1 Comment
Problem 1030 - Probability
- Solution Verified
Choose any integer, A, between 10 and 1000 (including 10 & 1000). Remove its last digit to get another integer, B. (For example, ...
Solve it!
Solve it!
10 correct answers,
29 tries,
2 commented solutions
, 10 solvers:
(flounders)
(guest)
(lucky99)
(stephisto)
(csilviu)
Patricia Lorintiu (patricia)
(Northwolves)
Balaji Krishnamurty (balaji1980)
(xiaofan)
(Amorydai)
(Show all user statistics)
Submitted by Joe (work) on May 17 2010 | 1 Comment
Submitted by Joe (work) on May 17 2010 | 1 Comment
