Question

Question 11 Suppose 3 bulbs are selected at random from a lot. Each bulb is tested and classified as defective (D) or non-defective (N). Write the sample space of this experiment?

Class X1 - Maths -Probability Page 387

Answer 1

Let D denotes defective and N denotes non- defective .
3 bulbs are selected at random from a lot .
so, number of possible arrangement of three bulbs = 2³ = 8
hence, number of sample space = 8

e.g., S = {(DDD) ,(DDN) ,(DNN), (NNN), (NDD),(NND), (DND), (NDN)}