CHARITY Emily is giving away part of her international doll collection to charity. She has 20 dolls, each from a different count
ry. a) If she selects 10 of them at random, how many different ways can he do this? b) What is the probability she chooses the ones from Ecuador, Paraguay, Chile, France, Spain, Sweden, Switzerland, Germany, Greece, and Italy?
To calculate the circumference of a circle, multiply the diameter of the circle with π (pi). The circumference can also be calculated by multiplying 2×radius with pi (π=3.14).
