If x is a positive integer and x is less than or equal to 30, what is the value of x?
(1) x can be written as the product of 3 different prime numbers each of which is greater than or equal to 2.
(2) x is divisible by 3 and 5.
My approach:
rephrased original question
0<x<=30
x=?
1) x=2*2*2=8
x=2*3*3=18
x=2*2*3=12
x=2*3*5=30
clearly statement 1 is insuff
2) x could be 15 or x could be 30
insuff
1+2= the only common value of x between statement 1 and statement 2 is 30
thus x=30
sufficient
my ans: C
OA is A
help!
(1) x can be written as the product of 3 different prime numbers each of which is greater than or equal to 2.
(2) x is divisible by 3 and 5.
My approach:
rephrased original question
0<x<=30
x=?
1) x=2*2*2=8
x=2*3*3=18
x=2*2*3=12
x=2*3*5=30
clearly statement 1 is insuff
2) x could be 15 or x could be 30
insuff
1+2= the only common value of x between statement 1 and statement 2 is 30
thus x=30
sufficient
my ans: C
OA is A
help!
