What is the minimum number of bulbs each marked 60 W,40V that can work safety when connected in series with a 240 V supply

Options :
  1. 4
  2. 8
  3. 6
  4. 7
Answer and Explanation :-

Answer: Option 3

Explanation:

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One may not always know his purpose until his only option is to monopolize in what he truly excels at. He grows weary of hearing the answer 'no' time and time again, so he turns to and cultivates, monopolizes in his one talent which others cannot possibly subdue. Then, beyond the crowds of criticism and rejection, the right people recognize his talent - among them he finds his stage.
-Criss Jami