-
harsh.champ
- Legendary Member
- Posts: 1132
- Joined: Mon Jul 20, 2009 3:38 am
- Location: India
- Thanked: 64 times
- Followed by:6 members
- GMAT Score:760
What is the value of Y?
A: XXYY is a perfect square.
B:1/Y of the numbers from 1 to 3000000 are divisible by 2 but not by 3.
The soln. is as below:- [Don't peek before trying by yourself
]
[spoiler]Using statement A:
XXYY = 11(X0Y).
Now, here X0Y has to be a multiple of 11 and obviously
11 (X0Y) is a perfect square.
The value of X0Y has to be 704. No other value of X0Y is
possible.
Hence, the value of Y is 4.
Hence, statement A alone is sufficient to answer the question.
Using statement B:
The number of natural numbers from 1 and 3000000 that are
divisible by 2 but not by 3 can be easily calculated and is a
unique value.
Hence, the value of Y can also be uniquely determined.
Hence, statement B alone is sufficient to answer the question.[/spoiler]
A: XXYY is a perfect square.
B:1/Y of the numbers from 1 to 3000000 are divisible by 2 but not by 3.
The soln. is as below:- [Don't peek before trying by yourself
][spoiler]Using statement A:
XXYY = 11(X0Y).
Now, here X0Y has to be a multiple of 11 and obviously
11 (X0Y) is a perfect square.
The value of X0Y has to be 704. No other value of X0Y is
possible.
Hence, the value of Y is 4.
Hence, statement A alone is sufficient to answer the question.
Using statement B:
The number of natural numbers from 1 and 3000000 that are
divisible by 2 but not by 3 can be easily calculated and is a
unique value.
Hence, the value of Y can also be uniquely determined.
Hence, statement B alone is sufficient to answer the question.[/spoiler]
It takes time and effort to explain, so if my comment helped you please press Thanks button
Just because something is hard doesn't mean you shouldn't try,it means you should just try harder.
"Keep Walking" - Johnny Walker
Just because something is hard doesn't mean you shouldn't try,it means you should just try harder.
"Keep Walking" - Johnny Walker
