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    three englishmen and three frenchmen work for the same company. each of them knows a secret not known to others. they need to exchange these secrets over person-to-person phone calls so that eventually each person knows all six secrets. none of the frenchmen knows english, and only one englishman knows french. what is the minimum number of phone calls needed for the above purpose?

    Mohammed

    Guys, does anyone know the answer?

    get three englishmen and three frenchmen work for the same company. each of them knows a secret not known to others. they need to exchange these secrets over person-to-person phone calls so that eventually each person knows all six secrets. none of the frenchmen knows english, and only one englishman knows french. what is the minimum number of phone calls needed for the above purpose? from screen.

    Three Englishmen and three Frenchmen work for the same company. Each of them knows a secret not known to others. They need to exchange these secrets over phone to phone calls so that eventually each person knows all six secrets. None of the Frenchmen knows English and only one Englishman knows French. What is the minimum number of calls needed for the above purpose?

    Three Englishmen and three Frenchmen work for the same company. Each of them knows a secret not known to others. They need to exchange these secrets over phone to phone calls so that eventually each person knows all six secrets. None of the Frenchmen knows English and only one Englishman knows French. What is the minimum number of calls needed for the above purpose?

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    Three Englishmen and three Frenchmen work for the same company. Each of them knows a secret not known to others. They need to exchange these secrets over phone to phone calls so that eventually each person knows all six secrets. None of the Frenchmen knows English and only one Englishman knows French. What is the minimum number of calls needed for the above purpose?

    Question

    Three Englishmen and three Frenchmen work for the same company. Each of them knows a secret not known to others. They need to exchange these secrets over phone-to-phone calls so that eventually each person knows all six secrets. None of the Frenchmen knows English and only one Englishman knows French. What is the minimum number of calls needed for the above purpose?

    ___. Open in App Solution

    (c) There have to be 2 calls from each person to the Englishman who knows French to get all the information. So, there should be 10 calls. But when the fifth guy call he would get all the information of the previous 4 guys alongwith Englishman’s information. Hence, 1 call can be saved. So, the total number of calls = 9.

    Suggest Corrections 3 SIMILAR QUESTIONS

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    MathByVemuri: Puzzle

    Three Englishmen and three Frenchmen work for the same company. Each of them knows a secret not known to others. They need to exchange t...

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    Puzzle-5 (CAT-2005)

    Three Englishmen and three Frenchmen work for the same company. Each of them knows a secret not known to others. They need to exchange these secrets over person-to-person phone calls so that eventually each person knows all six secrets. None of the Frenchmen knows English and only one Englishman knows French.What is the minimum number of phone calls needed for the above purpose?

    (A) 5          (B) 15            (C) 9           (D) 10

    Solution:

    Let us name the three Englishmen as E1,E2 and E3 and the three Frenchmen as F1,F2 and F3. Let us consider E1 to be knowing both English and French languages.

    See the following table for the sequence of phone-calls. The minimum number of phone-calls required is 9:

    Answer:C

    Posted by MathByVemuri at 07:36

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    [Solution] Three Englishmen and three Frenchmen work for the same company. Each of them knows a secret not known to others. They need to exchange these secrets over person

    Three Englishmen and three Frenchmen work for the same company. Each of them knows a secret not known to others. They need to exchange these secrets over person-to-person phone calls so that eventually each person knows all six secrets. None of the Frenchmen knows English, and only one Englishman knows French. What is the minimum number of phone calls needed for the above purpose? - Consider there are 6 people numbered 1-3 englishmen and 3-6 frenchmen, let 3 know both english and french. First call would be between 1-3 then 2-3 such that 3 know secret of all 3 englishmen. Let 3 call 4 . Similarly there would be call between 4-5 then 4-6 such that 4 know secret of all 3 frenchmen. Now 3 would call 4 . Such that 3 and 4 would know secret of all 6 members. Now to let this know to 1,2,5,6 more 4 calls would be required. Hence, minimum calls required would be 9.

    CAT 2005 Question 29

    Question 29

    Three Englishmen and three Frenchmen work for the same company. Each of them knows a secret not known to others. They need to exchange these secrets over person-to-person phone calls so that eventually each person knows all six secrets. None of the Frenchmen knows English, and only one Englishman knows French. What is the minimum number of phone calls needed for the above purpose?

    DOWNLOAD CAT STUDY PLAN PDF

    Solution

    Consider there are 6 people numbered 1-3 englishmen and 3-6 frenchmen, let 3 know both english and french.

    First call would be between 1-3 then 2-3 such that 3 know secret of all 3 englishmen.

    Let 3 call 4 .

    Similarly there would be call between 4-5 then 4-6 such that 4 know secret of all 3 frenchmen.

    Now 3 would call 4 . Such that 3 and 4 would know secret of all 6 members.

    Now to let this know to 1,2,5,6 more 4 calls would be required.

    Hence, minimum calls required would be 9.

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    Mohammed 2 month ago
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