# 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?

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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

**Q.**

The reason the narrator does not disclose to them that he knows their secret.

**Q.**

What is the tense of the main verb in the sentence?

The old man knows many forgotten languages, life-saving techniques and closely guarded secrets.

**Q.**Beneath the surface of conscious and volitional knowledge, however, lies the twin domains of the personal and ‘collective unconscious’ or “a structural layer of the human psyche containing inherited elements, distinct from the personal unconscious”. Socrates is famous for, among other things, recognizing that one knows but knows not that one knows. Such knowledge forms part of the personal unconsciousness and the Socratic method is a traditional way of raising such knowledge to consciousness.________________________

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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

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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?

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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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