Question

In a bag there are 100 balls out of which 13 are defective ones

Answer 1

So? Whats Your Question?

Balls which are not defective =

$100 - 13 \\ 87$

Percentage of balls defective =

$\frac{13}{100} \times 100 \\ \frac{13}{1} \times 1 \\ 1 3$

13%

Ratio From total balls from defective =

100:13

Ratio from good balls to defective one =

87:13

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Answer 2

Answer:

probability of defective=13/100=0.13

probability of non defective=87/100=0.87