Hi rainbowlife, You might have measured the markings on the numberline which are obviously same. What question is asking is the arrow pointing to a point.You will notice that arrow named E is slightly between markings 1 and 2 while the arrow named A is exactly on marking -2. Thus the point E is not ...

Yes..this will mostly be the case for inference questions because it would require you to make assumption like (if X causing y then Y can be caused by X) such info is not given in the argument. For inference stick to just WHAT IS SPECIFICALLY GIVEN IN THE PREMISE. GMAT does not wan't you to use your...

Hi Kaunteya, Start off by simplifying all the terms in to their primary factors and then equate the powers of exponents on both sides of equation. 27^(4x + 2) * 162^(-2x) * 36^x * 9^(6–2x) = 1 or (3)^4(4x + 2) * (2*81)^(-2x) * (6*6)^x * 3^2(6–2x) = 1 or (3)^4(4x + 2) * (2)^(-2x) * (3)^4(-2x) * (3*2)...

Thanks Stuart.


Komal

(15^x + 15^x+1) = 15^y4^y (15^x + 15^x+1) can be simplified to: (15^x + 15^x(15^1)) 15^x(1+15) :Almost there or 15^x(16) = 15^y4^y or 15^x(4)^2 = 15^y4^y Since both the sides are equal and both have same BASES so the powers MUST also be same. This means y = 2 Hope it helps Thanks Komal

Hi Child,

I would recommend MGMAT Word translation guide. It contains fabulous explanation about combinatorics and permutation.

Hope it helps


Thanks
Komal

Hi Engin, This is a relative pronoun case error question. The modifier " many who take expensive brand-name medications daily" is modifying elderly patients, the subject of the sentence. The underlined portion is describing many of ? . We need something which RELATES the modifier to subjec...

(1/5)^m.(1/4)^18=(1/2)(10)^35 (1/5)^m.(1/4)^18= 5^35 Where did 2 and 10 go? (10 ^35)/2 = 2^34 * 5 ^ 35 5^-m.(1/4)^18=5^35 20^-m.(1)^18=20^35 I am not sure where did remaining powers 4 go ? if you have taken m powers from 18 then 4 will still have 18-m powers left....Correct me if I am wrong here bu...