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The probability of rolling a 2 on the number cube is 10/100 (since it was rolled 10 times out of 100 total rolls) and the probability of the coin landing heads up is 45/100 (since it landed heads 45 times out of 100 total coin flips).
To find the probability of both events happening, we multiply the individual probabilities:
(10/100) * (45/100) = 450/10000 = 45/1000
Therefore, the probability of rolling a 2 on the number cube and the coin landing heads up is 45/1000.