For the first question, we can use the formula of area of a parallelogram, ABSin(theta) sin(theta)'s maximum value is 1, when sin(theta) is 90. Hence this is definitely less than 24
another easy way for question with equilateral triangle PQR. We know Circumference is equal to Pi * d And the perimeter of triangle is d * 3 So Pi is greater than 3 which means B is greater. More explanation.. why did I say peremiter is d * 3 ? Its because its an equilaeral triangle and r1 + r2 is the same as the r inside the circle which means it is r * 2 which equals the d
For the last one, can't you just see that square root 5 > 1.5 already, and then reason that it will still be greater if it is multiplied by any height?
@Tejaswi Pant but height cannot be 0.5? it wont satisfy the rest of the given info. (0.5)^2 + 1^2 does not equal to 5. when the value of height is 1 only then the hypotenuse would be under root 5 in this case. (sorry this is a year later, i just recently started taking gre classes)
A set (thus also subset) is by definition a collection of objects, meaning order doesn't matter. For example the set {1, 2, 3} is the same "set" as the set {3, 1, 2}
I am sorry a question that you solved at 14:25 about the quantity, can you describe what mathematical concept proves that if a+d > b+c then a^2 +d^2 > b^2 +c^2??????????? There is no such mathematical proof that says the same things. Cause if that is true we would never have had the formula i.e (a+d) =a^2 + d^2 +2ad
3rd question: PR=QR=QP=r So, perimeter = 3r and as radius will be r/2 circumference = 2*pi*(r/2) = 3.14r Therefore B is greater. Nway Thanks for these it was really helpful.
No, the answer is b. You can easily see it from cosine theorem (which I think is the most clear solution wrt the one presented): e^2 = a^2 + d^2 -2ad cos 88° but also c^2 + b^2 - 2bc cos 92°. By knowing that cos 92° is negative and cos 88° is positive you can see immediately that a^2 + d^2 = b^2 + c^2 + positive stuff
for the question in around 17 minutes in the video, the answer is c. they both are equal. visualize the figure by adding 2 degree to 88 and subtracting 2 degrees to 92.
Preparing for 3 months, i was able to answer all but one
Thanks🙏🏻🙏🏻
I agree with the second question he should use combinations A = 5C1 and B = 5C4 ,
B = A
For the first question, we can use the formula of area of a parallelogram, ABSin(theta) sin(theta)'s maximum value is 1, when sin(theta) is 90. Hence this is definitely less than 24
great solve session dude!
Wow... great video.. Thank you.
another easy way for question with equilateral triangle PQR. We know Circumference is equal to Pi * d And the perimeter of triangle is d * 3 So Pi is greater than 3 which means B is greater.
More explanation.. why did I say peremiter is d * 3 ? Its because its an equilaeral triangle and r1 + r2 is the same as the r inside the circle which means it is r * 2 which equals the d
yep
great video thanks!
tq bro.. this will be usefull..... i am watching ur every videos...
I fell for the 30 60 90 triangle on the last one
For the last one, can't you just see that square root 5 > 1.5 already, and then reason that it will still be greater if it is multiplied by any height?
@Tejaswi Pant but height cannot be 0.5? it wont satisfy the rest of the given info. (0.5)^2 + 1^2 does not equal to 5. when the value of height is 1 only then the hypotenuse would be under root 5 in this case.
(sorry this is a year later, i just recently started taking gre classes)
Second question (subsets of S), how did you conclude that order doesn't matter? Is that implied in the term subset?
A set (thus also subset) is by definition a collection of objects, meaning order doesn't matter. For example the set {1, 2, 3} is the same "set" as the set {3, 1, 2}
He is right in the second question he should use combinations A = 5C1 and B = 5C4 , A= B
The number of objects in the subset are asked.So order , obviously, doesn't matter.
isnt there an easier way to do question 4? A lot of these are done harder ways that I do not get?????
thank you!
thanks for advice taking exam tomo
I am sorry a question that you solved at 14:25 about the quantity, can you describe what mathematical concept proves that if a+d > b+c then a^2 +d^2 > b^2 +c^2???????????
There is no such mathematical proof that says the same things. Cause if that is true we would never have had the formula i.e (a+d) =a^2 + d^2 +2ad
You have to use information about the angles in the figure. By the pythagorean inequality, b^2+c^2e^2. Thus, b^2+c^2
Wonderful
3rd question:
PR=QR=QP=r So, perimeter = 3r and as radius will be r/2 circumference = 2*pi*(r/2) = 3.14r
Therefore B is greater.
Nway Thanks for these it was really helpful.
thanks
The new gre has 1 min per question so it makes it even more difficult. Not sure how you expect us to think that fast 😢
I am work for GRE
For the question around 17:00, the answer is a
No, the answer is b. You can easily see it from cosine theorem (which I think is the most clear solution wrt the one presented): e^2 = a^2 + d^2 -2ad cos 88° but also c^2 + b^2 - 2bc cos 92°. By knowing that cos 92° is negative and cos 88° is positive you can see immediately that a^2 + d^2 = b^2 + c^2 + positive stuff
Still making silly mistakes 😩
Even though I solved all of em
for the question in around 17 minutes in the video, the answer is c. they both are equal.
visualize the figure by adding 2 degree to 88 and subtracting 2 degrees to 92.
sahii bro tara tesari angle add subtract garera infer garna milcha ta?
@@bikashchaudhary208 mildaina....ki add on both or subtract on both...add subtract garna mildaina
LMAO
So easy
Lmao I’m going to do terrible
So how did it go?
Are these really level 170?
According to the ETS guide, yes.
ez
commenting again because ive watched more of the video now and im annoyed at how poorly you explained these solutions.
Thank you for your feedback :)
True.
Poor quality of video and answer explanation
i solved these faster. theres dif ways
Crappy teacher 🥺☹️