 
<translate> Anyị na-aga n'ihu na-agụta ụbọchị ndị na-adịghị ahụkebe site na 1991 gaa n'ihu, nchikota ahụ ka ga-ekewa site na 7. Ọnụ ọgụgụ nke ụbọchị ndị dị otú ahụ bụ 14 ruo n'afọ 2001. Ya mere, a ga-emeghachi kalenda nke 1991 n'afọ 2002. Azịza ya bụ: (C). <eng> We go on counting the odd days from 1991 onward still the sum is divisible by 7. The number of such days are 14 upto the year 2001. So, the calender for 1991 will be repeated in the year 2002. The final answer: (C). 