Question

There are 210 identical plastic chips numbered 1 through 210 in a box. What is the probability of reaching into the box and randomly drawing the chip numbered 169? Express your answer as a simplified fraction or a decimal rounded to four decimal places.

Answer 1

Solution:

There are 210 identical plastic chips numbered 1 through 210 in a box.

Suppose we randomly draw a chip.

The sample space S is written as

S = {1 , 2 ,3 , 4 , 5 , 6 , ..................., 210}

No.of the elements in S = n = 210

Let event A such that drawing the chip numbered 169

A = {169}

The probability of event A is given by

P(A) = No. of elements in Sample space/No.of elements in event A

= 1/210

Answer;

The probability of reaching into the box and randomly drawing the chip numbered 169 is    or  0.0048