In a market research project, 20% opted for Nirma detergent whereas 60% opted fo

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In a market research project, 20% opted for Nirma detergent whereas 60% opted for Surf Blue detergent. The remaining individuals were not certain. If the difference between those who opted for Surf Blue and those who were uncertain was 720, how many respondents were covered in the survey ?

Options:

A . 1440

B . 1800

C . 3600

D . Data inadequate

Answer: Option B

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