Brain Teaser – Find the heavy ball

You have 5565 balls. One of them is heavier than the others. What is the minimum number of weighs required to find this ball?


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Discuss - 9 Comments

  1. emma says:

    it’s 62..!!!

  2. Ayush says:

    A single weight which is equally massive as the heavy ball or the other balls. or we can simply compare the balls among themselves rather than a weight

  3. Ayush says:

    A single weight which is equally massive as the heavy ball or the other balls.

  4. Etem123 says:

    3 times is enough.

  5. domi says:

    is it 8?

  6. kavita says:

    5565/3=1855
    so there will be 3 grps of 1855,so 2 comparisons
    then 1855/5=371
    so 5 grp of 371 so 4 comparisons required
    371/7=53
    6 comparisons r required
    53 a prime no can be further divided so 52 comparisons required total=2+4+6+52=64

  7. Rishabh Dev says:

    How did you get 65? Try doing the question for 6 balls, 9 balls, and so on. You should find a pattern. The answer would the number of groups of 3 the total balls can be divided in.

  8. kavita says:

    plzz give us d ans..

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