A basket contains four balls of four different colors: white, red, black and green. These balls will be distributed among four persons: Rajib, Lilu, Simu and Rida. Rida must not be given the black ball. Rajib must be given the white ball. Lilu must be given either red or black ball. Simu must not be given either black or green ball. If the above conditions are followed, which of the following must be true?
Explanation: শর্ত: R(রাজিব)=White. Rida \(\ne\) Black. Lilu = Red or Black. Simu \(\ne\) Black or Green. \nSimu \(\ne\) Black, Green; Simu must be Red or White. যেহেতু R = White, তাই Simu = Red. \nLilu = Red or Black. যেহেতু Simu = Red, তাই Lilu = Black. \nRida \(\ne\) Black. Rida = Green. (অবশিষ্ট একমাত্র রঙ)। \nঅতএব, Simu will be given the red ball must be true.]
