The charge on the conductor is +24 μC, since the charge is positive, same amount of charge but it will be negative.
That is - 24 μC.
To know the number of electrons, we know that the charge of an electron =
-1.6 * 10^-19 C.
= - 24 μC / (-1.6 * 10^-19 C)
= (-24 * 10^-6) / (-1.6 * 10^-19 C) Use your calculator
= 15 * 10^13
= 1.5 * 10 ^14 Electrons.