An enthusiastic shopper is considering 3 products (A, B, and C) that could potentially go on sale soon. The probability that product A will go on sale is 0.9 while that of B and C are 0.7 and 0.3 respectively. Assume these events are independent. Do not round results. What is the probability that 1. all 3 products will go on sale? 2. none of the 3 products will go on sale? 3. only product C will go on sale? 4. at least one product will go on sale?