While probability can be considered, if any definitive replay is given a student takes it for granted and if the examiner has some other answer in his key to the paper set, the poor student just looses the marks as the valuation is robotic.
Perhaps it is time that the question setter must make the conditions of the question dam clear for no further ambiguity. Let us see this question it self.
NO one, ever, connects 240V loads in series. The only exception is a older version of Fan regulators where series resistor is connected to control the fan speed. IMHO, while not intending to hurt any one, there is need for updating knowledge base, to the teachers as well. They are teaching to students who are expected to live in society of technological revolution.
At times we watch questions with multiple answers and the key is modified on public demand or that question is removed from valuation all together.