guess my number; your friend chooses an integer between 0 to 100. you have to find out that number by asking question but your friend can only answer yes or no what strategy would you use?
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Answered by
158
It is you can say a magic trick of mathematics. If I am free to ask questions to the guesser, I would ask whether the number is a prime or composite number. I can ask that whether the number is even or odd. I can also ask factors concerning the divisibility of the number. Suppose the guessed secret number is 50, if I ask whether it is a factor of 5 or not. It will be yes and, I might succeed in my guess. In this way, if I keep asking about the number, I can go to the nearest guess. Really, my strategy is to ask questions regarding the number from which we can know more about the number.
PinkyTune:
Hello, the asker did you like my ans.. it is not complete yet, I have the habit of finishing a answer by editing it several times..
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Answered by
135
ask whether the number is even or odd.
eliminates half of the options.
2nd, ask if it's between 1 to 50 or not.
eliminates other half.
3rd, ask if its a perfect square.
the perfect squares have almost a gap of 10 numbers between, but we would have already ruled out even or odd, so easier to choose the number.
ask if between 9-16, or 25-36 and so on.'
you can also ask if the number is divisible by 2 and 3 or by only 2 or only 3 if it's not a prime number.
this is one strategy.
or you can think of a better one! :)
eliminates half of the options.
2nd, ask if it's between 1 to 50 or not.
eliminates other half.
3rd, ask if its a perfect square.
the perfect squares have almost a gap of 10 numbers between, but we would have already ruled out even or odd, so easier to choose the number.
ask if between 9-16, or 25-36 and so on.'
you can also ask if the number is divisible by 2 and 3 or by only 2 or only 3 if it's not a prime number.
this is one strategy.
or you can think of a better one! :)
hey,, you have used some points in my ans
this is not fair..u nearly copied my answer..
i didn't see your answer was there before typing mine, i just wrote it. i didn't copy it. i
the points i wrote are really general points. askin if a number is even or odd, perfect square or not, in the 1st half or the 2nd, anyone can think of these. i didnt copy your answer. it was when u commented i knew ur answer was also there.
you can always write a better answer than me :)
it is very unusual.. u r answers and mine nearly match....see for u rself
I have to tell I am very sorry of accusing you falsely...though our answers are very similar, u r ans has one or two more points than my one. .... u r ans should be the best.. I apologize for my earier behaviour
*earlier
i dont have the best answers, we just have different answers, well, almost.. :D
noono,,, look I have used some points exactly you used..did u read my ans??
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