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থিম নির্বাচন

আপনার পছন্দের থিম বেছে নিন।

The membership of two committees , football committee and cricket committee , must be drawn exclusively form a group of seven people . Farid, Gaffar , Helal , Iftekhar , Jalil , Kalam and Lalit. * Each of the seven people must serve on a committee. * No one can serve on both committees. * Farid cannot be on a committee with Gaffar or with Jalil. * Helal cannot serve on a committee with Iftekhar. If Helal serves on football committee, which of the following must be true?

A. Farid serves on football committee
B. Gaffar serves on cricket committee
C. Iftekhar serves on cricket committee
D. Kalam serves on football committee
সঠিক উত্তরঃ B. Gaffar serves on cricket committee
Explanation: