I will go with E
We can rephrase the Q as 1/2n-2n >= 0 so what is the prob of n>= 4.
statement 1 tells us there are 6 numbers in the hat, but I don't know how many numbers are >= 4 so insuff
Statement 2 tells that n is between 1 and 30, but it doesn't say that the numbers are not repeated so the numbers can be all 2's
even combining 1 and 2 we cannot deduce anything.
DS Problem
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vineetbatra
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mchaubey
Posted: Fri Apr 02, 2010 4:06 pm
If a number n is pulled out of a hat at random, what is the probability that( 1/2)n - 2 â"°Â¥ 0?
(1) There are 6 numbers in the hat and each number is an integer.
(2) For every value of n in the hat, 1 â"°Â¤ n â"°Â¤ 30.
Stem:
n/2 - 2 >=0
Hence n/2 has to be greater than two and n has to be div by 2.
Hence we have even number greater than 4 satisfying
Statement one
We have no idea about what the 6 numbers are. Insuff
Statement two
We dont know how many number are there or what they are. Insuff
Combined
The 6 number could have a wide range from 0 to 30
Insuff
Answer E
