A six faced die is so biased that it is twice as likely to show an even number as an odd. It is thrown twice. What is the probability that the sum of the numbers is even?
a) 1/3
b) 2/3
c) 5/9
d) 6/11
e) 7/13
The required answer is : 6/9 *6/9 + 3/9 *3/9 = 45/81= 5/9 ....
a) 1/3
b) 2/3
c) 5/9
d) 6/11
e) 7/13
The required answer is : 6/9 *6/9 + 3/9 *3/9 = 45/81= 5/9 ....
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