I'd be super careful with this one, and do it like this:
102, 105, ..., 198 (sum of digits must be a multiple of 3).
-99 from each
3, 6, 9, ..., 99
divide by 3
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I'd be super careful with this one, and do it like this:
102, 105, ..., 198 (sum of digits must be a multiple of 3).
-99 from each
3, 6, 9, ..., 99
divide by 3
1/p + 1/q = (p+q)/(pq)
Now p and q are two different primes, and so neither p nor q divides (p+q),
and hence (p+q)/(pq) is already in reduced form. So denominator has to
be a product of two...
105=3*5*7
3 divides x
7 divides y
Need 5 to divide x or y.
So answer is B.
-Chris
D=0.89C
U=1.07T
(D+U)/(C+T) = 1.01
0.89C+1.07T = 1.01C + 1.01T
0.06T = 0.12C
C/T = 1/2
-Chris
a^2 + b^2 = 40000
2a+2b=560
So
a+b=280
a^+2ab+b^2=280^2 = 40000+400*80+6400=78400
So
What's the maximum quantitative score you can get on the CAT version
of the GMAT? Is it the same regardless of when you take the CAT?
I'm hoping to get all of the quantitative questions right when...
Does anyone have any opinions regarding the practice test in Kaplan's
latest book? I took the quantitative practice test, scored 35/37 (two
sloppy errors :( ) for a scaled score of 51-52. Is that...
Thanks for the tips! I'd like to get a 750+ on the GMAT, but I realize
that even for good test takers the range 720-800 can be iffy (you're
liable to wind up anywhere within that range).
-Chris
If anyone has materials that they can e-mail to me, I'd really appreciate it.
I'm at parity@optonline.net
What study materials should I buy? I assume the official ETS GMAT
book and Kaplan's...
That 3x+7y is divisible by 11 is written shorthand as
3x+7y =0 (11). If that is the case, multiplying
3x+7y by any integer will also be 0 (11), as will adding or subtracting
any multiple of 11x...
You give such well-written answers. Are you single? ;)
-E
Take it again!
This might come as a surprise to some students, but you are allowed to mess
up on a test! Your life is not over, just take it again!
Do well on it next time and you'll be fine....
Being out of university for years will actually make the test easier in some
ways. You should find that your vocabulary is a strong point.
If you once knew the maths, it'll come back very...
I agree with that strategy. Hopefully he is good at maths, then learning the
small vocabulary he needs for the SAT math should be simple.
I disagree a little, he should start learning the...
A good way to deal with problems like this is to prove upper and lower
bounds by induction.
We have that f(n)=1 for n<=1. I claim that n<=f(n)<=3n; this is
true for n<=1.
Assume true for...