I've collected two questions that I'm really confused on how to do.
1. Shabeen has a biased coin. The probability that the coin will land on heads is 0.6. Shabeen is going to throw the coin 3 times. She says the probability that the coin will land on tails 3 times is less than 0.1. Is Shabeen correct?
The answer is Yes cos 0.4*0.4*0.4. Could someone pls explain how to do these questions cos I'm not sure when to multiply or add probabilities.
2. Jeff is choosing a shrub and a rose tree for his garden. At the garden centre there are 17 different types of shrubs and some rose trees. Jeff says, "There are 215 different ways to choose one shrub and one rose tree.". Could Jeff be correct?
I attempted to do one of the combination formulas mainly cos i didn't know how to solve this. If someone could explain these two questions to me I would really appreciate it