Five bulbs of which three are defective are to be tired in two light-points in a dark-room. In how many trails the room shall be lightened?
CA Foundation · Quantitative Aptitude · MTP · May 2026
Five bulbs of which three are defective are to be tired in two light-points in a dark-room. In how many trails the room shall be lightened?
Suggested Answer and Working Notes:
Correct Answer: Option (B)
B. 7
Topics: Part-A: Business Mathematics
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