 <translate> The total of seven numbers = 7X21 = 147
The total of first 3 and last 3 numbers is = 3 X 19+3 X 23 = 126
So, the middle number is (147 - 126 ) = 21
The final answer: (E). <yor> Àpapọ̀ iye méje = 7X21 = 147 Àpapọ̀ àwọn nóńbà 3 àkọ́kọ́ àti 3 ìkẹyìn jẹ́ = 3 X 19+3 X 23 = 126 Nítorí náà, iye tó wà ní àárín jẹ́ (147 - 126 ) = 21 Ìdáhùn tó péye: (E). 