VeritasPrepKarishma wrote:
erikvm wrote:
VeritasPrepKarishma wrote:
.
What I meant was that the result cannot be something that is a multiple of 10x + 7y. 37 is the same as 30(3) + 7(1). 38 = 7(4) + 10(1). But there is no way to arrive at 39 with a multiple of 10 + multiple of 7. In other words, my question is: Would the answer to this question be "anything that is not "10x + 7y" or is it simply "x + y must be more than 16?"
Doesnt this question have anything to do with multiples of x and y?
Why not? Sum can be 17 or 37 or 38.
It is possible that y = 7 and b = 10.
x = 13, y = 7, remainder of x/y = 6
a = 19, b = 10, remainder of a/b = 9
y + b = 17
Sum 37 is also possible:
It is possible that y = 7 and b = 30.
x = 13, y = 7, remainder of x/y = 6
a = 39, b = 30, remainder of a/b = 9
y + b = 37
etc
Well that kinda enforces my question. All of those options are actually a multiple of 10 + multiple of 7?
37 is the same as 10*3 + 7*1.
17 is the same as 10*1 + 7*1
38 is the same as 10*1 + 7*4
My question remains; Is anything that is
not a multiple of 10x + 7y the correct answer?
All the options except 15 is actually a multiple of 10x + 7y
a)24 - same as 7*2 + 10*1
b)21 - same as 7*3 + 10*0
c)20 - same as 7*0 + 10*2
d)17 - same as 10*1 + 7*1
e)15 - No combination of 10x + 7y can give us 15.
So: Is this just a coincidence here, or is the "pattern" to this question? i.e: Could the question stem just as well say "Which of the following answer choices is not a multiple of 10 + multiple of 7?