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AbhishekP220108
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Quote:
Hey, it worked i guess, i was able to maintain an accuracy of 70%+ across 3 study sessions in hard difficulty RCs. Surprisingly the AI thing worked better than expected after i started intuitively discussing with it, and it also helped to identify root causes of small behavioural mistakes i was doing earlier.
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Good to hear
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Thanks!
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AbhishekP220108
Hi Dev, well it is definitely a hard one. And its not hard because of the logic the argument presents but the choices are framed with the terms that are techincal in CR.

Do check this explanation pretzels-can-cause-cavities-interestingly-the-longer-that-a-pretzel-20427.html?style=12#p1209964
Thank you !
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if-a-0-is-is-1-a-a-b-120511.html

From Part B a =b2
So a is positive
Where I am going wrong
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Hey, it worked i guess, i was able to maintain an accuracy of 70%+ across 3 study sessions in hard difficulty RCs. Surprisingly the AI thing worked better than expected after i started intuitively discussing with it, and it also helped to identify root causes of small behavioural mistakes i was doing earlier.
Was a game changer for me. Glad it’s working for you too.
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Quote:

From Part B a =b²
So a is positive
Where I am going wrong
You cannot directly say a=b^2
From the equation in (2)

When you solve it it gives two options with + or -
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b2 is always+
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When we take square root of both sides of an equation , we must account for both + and - possibilities
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s-is-a-set-of-positive-integers-such-that-if-integer-x-is-a-member-of-246777.html

Quote:

When we take square root of both sides of an equation , we must account for both + and - possibilities
Imaginary number is not in GMAT so - b2 is not possible
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It has nothing to do with imaginary numbers, we are here talking about negative real numbers
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Was a game changer for me. Glad it’s working for you too.
Absolute Gold.
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Quote:

You cannot directly write a=b^2
From the equation in (2)

When you solve it, it gives two options with + or -
Possible cases for (a, b)

(-9, 3)
(-9, -3)
(9, 3)
(9, -3)

Try them out and you would know why

My 2 cents: when in doubt try using test numbers
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Hi experts !
While attempting DS (math type), i often make error due to missing out one of the few constraint - which aren’t explicitly mentioned - but are either Quant concept application or the process gap. How do i improve in this aspect ? Will focussing on Quant section more will improve it ? Or keep solving such DS questions for exposure and practice ? Or any other strategy ?
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dp1234
Hi experts !
While attempting DS (math type), i often make error due to missing out one of the few constraint - which aren’t explicitly mentioned - but are either Quant concept application or the process gap. How do i improve in this aspect ? Will focussing on Quant section more will improve it ? Or keep solving such DS questions for exposure and practice ? Or any other strategy ?
Hi,
Firstly notice if it is happening in general for all questions or particularly in some concepts. If it is happening is some concepts only, then that would need to be fixed. Going back to basics to see you missed out on anything and practicing could help.
Or if general, one thing that might help is practicing untimed, take it slow, recognize all that is given in the stem and what needs to be found. When you move to evaluate statements, even then, go step-by-step, draw inferences, do a sanity check before fixing on the answer. Then log the error if incorrect.
After some practice, you will start recognizing them quicker and make less mistakes.
At the same time, being better at quant will always help.
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Thanks will try the untimed practice approach.
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the-sum-of-all-solutions-for-x-in-the-equation-x-2-8x-21-x-197663.html in this question, in bunuel’s approach, in scenario 1 it is x-4>=0 and in scenario 2 it is x-4<=0. Wont the scenario 2 be considered like x-4<0? since we have already accounted for equal to in scenario 1. Somebody please help.

ie., in scenario 2, x<4 and thus 4 will be discarded and we will be left with only x=3 as the solution

and in scenario 1, x>=4 and 5 is valid. so our ans would be just 5+3=8?
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