A research group conducted a survey of 500 consumers and reported that 370 consumers preferred product X and 240 consumers preferred product Y. What is the least number that must have preferred both the products?

NDA 2026 Mathematics question

A research group conducted a survey of 500 consumers and reported that 370 consumers preferred product and 240 consumers preferred product . What is the least number that must have preferred both the products?

(A)90
(B)100
(C)110Correct
(D)Cannot be determined due to insufficient data

Answer: (C)

Solution

. Since ,

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Question ID VK-030418