b$.$From your completed table, does the number of segments lit for each decimal number seem to bear a $1-$to$-1$ relation to the displayed number itself? That is$,$ knowing only the number of lit segments but not actually seeing the displayed denary digit, can we say which denary digit is displayed?

$(1$ mark$)$

c$.$In the supporting text to the interactive resource used in this question, it is mentioned that the seven$-$segment displays can also represent letters used in hexadecimal digits. Which segments of a single seven$-$segment display would be lit for the input $4-$bit binary value $10102$ as a single hexadecimal digit?

$(2$ marks$)$

d$.$What hexadecimal letter represents the denary number $1210?$ Which segments of a single seven$-$segment display could be lit to display this number as a single hexadecimal digit?