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(2) The product of any two factors of x is greater than 2 but less than 10.
Source: GMAT Club Tests  Difficulty: Hard Easy if one is careful
GMAT Club Tests  Difficulty: Hard Easy if one is careful
Almost sufficient. However
X=4 has factors 4,2,1. There is no factor such that 2
X=3 has factors 3,1. Same as before. NS.
2) The product of ANY two factors is 2
If x=3, 3*3=9, 3*1=3 and 1*1 is 3. X can be 3.
If x=2, 2*1=2, x cannot be 2.
X must be 3, therefore X is prime.


Hi Generic [Bot],
Here are updates for you:
ANNOUNCEMENTS
Watch earlier episodes of DI series below EP1: 6 Hardest TwoPart Analysis Questions EP2: 5 Hardest Graphical Interpretation Questions
Tuck at Dartmouth
