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If 5 coins are tossed, what is the probability that at most 4 will be tails? pls help me solve this.? Why are rainbows called rainbows? What type of cells would be blue in an Acid â€“Fast stain of a mucus sample from the lungs? F 5 coins are tossed, what is the probability that at most 4 will be a tails? I am reading about waves.What does the word "note" mean ?