there are 3 red, 1 blue and 2 purple marbles in a bag. once a marble is selected, it is replaced. what is the probability of picking a purple and blue? P (purple and blue)

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Step-by-step explanation:

There are total (3 purple + 4 orange + 1 green) = 8 marbles in the bag . Now, 2 marbles out of 8 marbles can be selected in C(8,2) = 8!/2!6! = 28 no. of ways . And 2 purple marbles out of 3 purple marbles can be selected in C(3, 2)

= 3!/2! 1! = 3 no. of ways. Hence the required probability = 3/28

the correct answer is semicircle

step-by-step explanation:

the answer is semicircle because the shorter arc joining two points on the circumference of a circle is known as the minor arc, the larger arc is called the major arc, and a semicircle is a half circle, formed by cutting a whole circle along a diameter line.

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