According to the bass diffusion model, if the rate of adoption by innovators was 0.20, and the rate of adoption by imitators was 0.50, the market size is 20 million and the cumulative number of adopters of the product was 10 million, the number of adopters in the year would be 4.5 million.

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The bass diffusion model is a mathematical model that describes the adoption of a new product over time. The model has four parameters: the rate of adoption by innovators, the rate of adoption by imitators, the market size, and the cumulative number of adopters of the product. The number of adopters in a given year is given by the following equation:```N(t) = M * (1 - exp(-(p + q) * t))```where:* N(t) is the number of adopters at time t* M is the market size* p is the rate of adoption by innovators* q is the rate of adoption by imitators* t is the timeIn this case, the rate of adoption by innovators is 0.20, the rate of adoption by imitators is 0.50, the market size is 20 million, and the cumulative number of adopters of the product is 10 million. Plugging these values into the equation, we get:```N(t) = 20,000,000 * (1 - exp(-(0.20 + 0.50) * t))``````N(t) = 20,000,000 * (1 - exp(-0.70 * t))```To find the number of adopters in the year, we need to solve for N(1). Plugging in t = 1, we get:```N(1) = 20,000,000 * (1 - exp(-0.70 * 1))``````N(1) = 20,000,000 * (1 - exp(-0.70))``````N(1) = 20,000,000 * (1 - 0.4966)``````N(1) = 20,000,000 * 0.5034``````N(1) = 10,068,000```Therefore, the number of adopters in the year would be 10,068,000.

According to the Bass Diffusion Model, If the Rate of Adoption