<Tr> <Th> Binary </Th> <Td> 1010100 </Td> </Tr> <Tr> <Th> Ternary </Th> <Td> 10010 </Td> </Tr> <Tr> <Th> Quaternary </Th> <Td> 1110 </Td> </Tr> <Tr> <Th> Quinary </Th> <Td> 314 </Td> </Tr>

The sum of an 84-number series is –7 980. what is the sum of the first and last numbers