Question

A box of 15 gadgets is known to contain 5 defective gadgets. If 4 gadgets are drawn at random,what is the probability of finding not more than 2 defective gadgets?

Answer 1

Hey , 
U need to be familiar with basic probability to solve this question.
This question can be solved in many ways but I think the one that is given in the images is the easiest to compute.

Hope this helps ! 
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