rfulky
04-30-2008, 05:00 PM
How many prime numbers are there strictly greater than 5 and less than integer k?
(1) 20 < k < 34
(2) 17 < k < 33
The answer is E (Statements (1) and (2) TOGETHER are NOT sufficient).
I don't understand why. To me for each statement alone you can determine how many prime numbers are between 5 and K.
example (my way of thinking)
Statement (1)
K=23,
Therefore, between 5 and 23 there are 5 prime number (7,11,13,17,19)
With this information I can determine how many prime numbers are between 5 and any integer k.
Where am I going wrong?
Thanks for all your help!
(1) 20 < k < 34
(2) 17 < k < 33
The answer is E (Statements (1) and (2) TOGETHER are NOT sufficient).
I don't understand why. To me for each statement alone you can determine how many prime numbers are between 5 and K.
example (my way of thinking)
Statement (1)
K=23,
Therefore, between 5 and 23 there are 5 prime number (7,11,13,17,19)
With this information I can determine how many prime numbers are between 5 and any integer k.
Where am I going wrong?
Thanks for all your help!