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?

বলা হয়েছে Helal যদি football committee তে থাকে, তবে answer option - এর কোনটি অবশ্যই সত্য হবে? প্রথমে চলুন ‘Helal’ সংক্রান্ত condition দেখা যাক। চতুর্থ condition অনুযায়ী Helal থাকবে না। Iftekhar - এর সাথে। তাই এই শর্তানুযায়ী answer option (B) must be true । কারণ Helal যদি football committee serve করে তাহলে iftekhar অবশ্যই cricket committee serve করবে।