Data Analysis Practice Test 1

ORIGINAL QUESTIONS FROM PREVIOUS YEAR PAPERS

Directions (49-51): Study the following information carefully to answer these questions:
A box contains 4 red pens, 9 blue pens and 5 green pens. The pens are to be drawn randomly as per the specifications given in each of the following questions:

Question : 51 of 65

Marks: +1, -0

If two pens are drawn randomly from the box, what will be probability that none is blue?

$3/17$
$4/17$
$12/17$
$13/17$
None of these

Validate

Solution:

Probability of pens that none is blue:

{^9C_2}/{^18C_2}={9×4}/{9×17}=4/17

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