Orkut
Maths Puzzle
Q. A group of people is sitting around a round table. They give a coffee break. When they return to the table after the break, they sit down randomly. Interestingly, they notice that the six closest persons sitting next to each one of them (three to the left, and three to the right) are completely different from the six closest persons in the previous setting.
At least how many persons should be there?
Read Solution (Total 9)
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- There should be at least 13 persons.
- 11 years agoHelpfull: Yes(2) No(3)
- 17 person should be there atleast
- 11 years agoHelpfull: Yes(1) No(1)
- Any logic??
- 11 years agoHelpfull: Yes(1) No(0)
- 1,5,9,13,17,4,8,12,16,3,7,11,15,2,6,10,14
1,14,10,6,2,15,11,7,3,16,12,8,4,17,13,9,5
so there must be atleast 14 persons
- 11 years agoHelpfull: Yes(1) No(2)
- hmm sry inthe previous ihavemistypen that 14members
but it is actually 17 members - 11 years agoHelpfull: Yes(1) No(2)
- @ chaitanya and others,
pls check.
As per your solution 17 persons are required and arrangement is given as
1,5,9,13,17,4,8,12,16,3,7,11,15,2,6,10,14
1,14,10,6,2,15,11,7,3,16,12,8,4,17,13,9,5
pls see that in second arrangement, 10 is surrounded by same persons like 1,14 on one side and 6,2 on other side where as
statement says
the six closest persons sitting next to each one of them (three to the left, and three to the right) are completely different from the six closest persons in the previous setting.
any justifications ?????? - 11 years agoHelpfull: Yes(1) No(0)
- 13 . the reason is as mentioned by chaitanya.
But since it is round table.. 13 would make it - 11 years agoHelpfull: Yes(0) No(3)
- The answer is 5 turns.First we consider first 4 nos,then we assume the friend has thought of the other 5.so he loses a turn.So next two turns will be wasted in the same way.Next 2 turns,he guesses numbers this way..1,2,3,5..so if 5 is among the guessed numbers,.1 turn is successful...next two turns he guesses the next two.
- 10 years agoHelpfull: Yes(0) No(0)
- 17 person should be there atleast
- 9 years agoHelpfull: Yes(0) No(0)
Orkut Other Question
Q. You are playing a game with your friend. Your friend chooses three of the numbers among (1, 2, 3, 4, 5, 6, 7, 8, 9). You will call four numbers in each turn, and he will tell you how many of them are among the chosen numbers.
In order to guarantee to find these numbers in all cases, how many turns are needed?
Q. 6 guys can each carry a maximum of a 10 day ration-supply; they are on the edge of a desert; so they could all walk together straight out into the desert for 5 days, then return home. That's clear! But not much fun.
Well, in order to make this puzzle possible, they decide on a plan of action to send one of them as far as possible straight out into the desert, such that this "chosen one" can then return home, naturally!
Their plan uses 2 strategies:
1- hiding spots for supplies
2- guys giving supplies to other guys
And to make your life easier, the hiding and/or remitting of supplies is always at day's end, and in "packets" of one-day-rations.
Their plan is also such that in total, the least possible packets have been hidden. A packet weighs 7 pounds.
Finally, the guys walk at same speed: 23 miles per day.
How many miles was the "chosen" one able to go into the desert, and how many "pounds" were hidden?