1. Six performers Akash, Bishal, Nisha, Diksha, Esha and Firoz will perform on one day each of six days of the week starting from Monday and ending on Saturday. 2. Nisha will perform on a Tuesday. 3. Diksha will not perform on a Monday or a Wednesday. Day Person Monday Diksha Tuesday Nisha Wednesday Diksha Thursday Friday Saturday 4. Akash, Firoz and Bishal will perform one after the other in the same order. Case I Case II Day Person Person Monday Diksha Diksha Tuesday Nisha Nisha Wednesday Diksha Akash Diksha Thursday Firoz Akash Friday Bishal Firoz Saturday Bishal But, in Case II, there is no single position left which Diksha can occupy. So, it is eliminated. In Case I, only one position is left which Diksha can occupy, i.e, Diksha will perform on Saturday. Now, only Esha is left and Monday is still vacant. So, Esha will perform on Monday. So, the final arrangement is: Day Person Monday Esha Tuesday Nisha Wednesday Akash Thursday Firoz Friday Bishal Saturday Diksha Hence, 3 performers perform after Akash.