GMAT Prep / LCM

[Blast]

xx

[cramya]

Stmt I

x can be 5,10,15,30

lcm of all of the above wiht 6 and 9 is 90

SUFF

Stmt II
x can be 5 or 15 or 45

Again lcm of the above wiht 6 and 9 is 90

SUFF

D)

[srisl11]

Stmt I

x can be 5,10,15

lcm of all of the above wiht 6 and 9 is 90

SUFF

Stmt II
x can be 5 or 15

Again lcm of the above wiht 6 and 9 is 90

SUFF

D)

Thanks Cramya...
Its a wonderful and a simple solution for a very tough problem

[cramya]

Thanks Cramya...
Its a wonderful and a simple solution for a very tough problem

Thanks Sris for the nice words!

I actually missed 30 and 45 which I have edited.


The key is finding the factors of 30 and 45 in finding what x could be and then what the lcm with 6 and 9 could be.

1,2,3,5,6,10,15,30 are factors of 30

1,3,5,9,15,45 are factors of 45