Tic-Tac-Toe is being played. One 'X' has been placed in one
of the corners. No 'O' has been
placed yet.
Where does the player that is playing 'O' has to put his
first 'O' so that 'X' doesn't win?
Assume that both players are very intelligent. Explain your
answer
- 2 Answers
- 5317 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / guest
"O" should be placed in the center.
Let's number the positions as:
1 | 2 | 3
---------
4 | 5 | 6
---------
7 | 8 | 9
It is given that "X" is placed in one of the corner
position. Let's assume that its at position 1.
Now, let's take each position one by one.
? If "O" is placed in position 2, "X" can always win by
choosing position 4, 5 or 7.
? If "O" is placed in position 3, "X" can always win by
choosing position 4, 7 or 9.
? If "O" is placed in position 4, "X" can always win by
choosing position 2, 3 or 5.
? If "O" is placed in position 6, "X" can always win by
choosing position 3, 5 or 7.
? If "O" is placed in position 7, "X" can always win by
choosing position 2, 3 or 9.
? If "O" is placed in position 8, "X" can always win by
choosing position 3, 5 or 7.
? If "O" is placed in position 9, "X" can always win by
choosing position 3, or 7.
If "O" is placed in position 5 i.e. center position, "X"
can't win unless "O" does something foolish ;))
Hence, "O" should be placed in the center.
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / ni hao
If what answer #1 said is true, it would end in a cat's
game (tie) unless "X" does something foolish, which he
wouldn't considering that both players are very
intelligent..
| Is This Answer Correct ? | 0 Yes | 0 No |
How would you cut a cake in 8 pieces with only three cuts.
14 Answers CTS, eClerx, Exilant, Google, Infosys,
There are 3 persons X, Y and Z. On some day, X lent tractors to Y and Z as many as they had. After a month Y gave as many tractors to X and Z as many as they have. After a month Z did the same thing. At the end of this transaction each one of them had 24. Find the tractors each originally had?
A frog starts climbing 15 feet wall. Each hour he climbs 3 feet and rests for 30 minutes. During rest, he slips back 2 feet. How many hours does the frog take to reach the top?
I bought a car with a peculiar 5 digit numbered licence plate which on reversing could still be read. On reversing value is increased by 78633. Whats the original number if all digits are different?
2 Answers Mettler Toledo Turing Software, TCS, Vijay Industries,
Among 12 identical looking golf balls there is one that is defective in weight. It is either heavier or lighter than the standard one. You have a balance. You can only weigh 3 times to find out which one is defective and whether it is heavier or lighter.
A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396. What is the sum of the three digits?
Submit Answer Users Answer (48) BrainVista Answer Puzzle A Friend Add to Favourite Back to Search Result Hello sajeesh murali ? my Answers ? my Favourites ? Modify Personal Info ? Subscribe ? Logout ? Jigsaw Puzzle ? Join the Dots ? Marbles Game ? Balls Game ? Towers of Hanoi ? Think Number ? Find A Day Brain Teaser No Three Gold (G) coins, three Silver (S) coins and three Copper (C) coins are arranged in a single row as follow: G S C G S C G S C ? Only 2 adjacent unlike coins can be moved at any one time. ? The moved coins must be in contact with at least one other coin in line. i.e. no pair of coins is to be moved and placed away from the remaining ones. ? No coin pairs can be reversed i.e. a S-C combination must remain in that order in its new positionwhen it is moved. What is the minimum number of moves required to get all the coins in following order? C C C S S S G G G Show all moves.
There are 8 stones which are similar except one which is heavier than the others. To find it, you are given a pan balance. What is the minimal number of weighing needed to find out the heaviest stone ?
There are 3 societies A, B, C. A lent cars to B and C as many as they had already. After some time B gave as many tractors to A and C as many as they have. After sometime c did the same thing. At the end of this transaction each one of them had 24. Find the cars each orginally had.
why the students are lag for answering this type of questions?
In rail road there are some stations. Each station should have tickets to all other stations.If they add some new stations they need 46 more tickets.How many stations are there before and after adding the stations?
Write Eleven Lakh,Eleven Thousand,Eleven Hundred,Eleven in figures.
15 Answers Alard College, LIC, Nishant Mouldings, WinSoft,
English 
