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I have to get a large image database(thousands of photos) that is free for personal use and have to download it with one click. Where can i find such a database(please provide direct link)

Multiply the corresponding change by the probability and add them to get the expected change = 1200(.2) + 500(.5) - 800(.3) = 240 + 250 - 240 = 250. The expected increase is therefore 250.

Multiply the corresponding change by the probability and add them to get the expected change = 1200(.2) + 500(.5) - 800(.3) = 240 + 250 - 240 = 250. The expected increase is therefore 250.