 
<translate> Ọnụ ọgụgụ nke nọmba asaa = 7X18 = 126 Nchịkọta nke nọmba 3 mbụ na nke ikpeazụ bụ = 3 X 14 + 3 X 19 = 99 N'ihi ya, nọmba dị n'etiti bụ (126 - 99 ) = 27 N'ihi ya azịza ikpeazụ bụ (C). <eng> The total of seven numbers = 7X18 = 126
The total of first 3 and last 3 numbers is = 3 X 14+3 X 19 = 99
So, the middle number is (126 - 99 ) = 27 So the final answer is (C). 