Management Aptitude Test Dec 2013 Paper

Question : 103 of 200

Marks: +1, -0

In a defective 6 faced die with numbers 1 to 6 inscribed, the probability of getting an odd number is twice the probability of getting an even number. Find the probability of getting a 2-digit prime number on adding 2 successive throws of the die.

$2/81$
$4/81$
$1/3$
$1/9$

Validate

Solution:

(b) Here, the dice is defective and P (getting an odd number) = 2P (getting an even number)
∴ P (odd number) =

2/3

P (even number) =

1/3

∴ P (getting an odd number) =

2/9

P (getting an even number) =

1/9

∴ P (getting a 2-digit prime number)
= 2 ×

2/9×1/9=4/81

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