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Mod note for the group.

Healthy discussion and questions are encouraged here, that is the whole point of this space. Being rude or mocking someone is not. Please keep it civil.

If it comes up again it will be a warning, and after that a ban.

Nitesh, you caught your own mistake and posted the correction yourself. That is all that was needed, no need to keep apologising.
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Can someone suggest what method will you use if you have to find probability of drawing 2 pair of socks from total of 4 pair. Also can we use sequential probability here.
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You can tag Bunuel and ask in Practice Questions, he is the legend for Quant..

Also, post official gmatclub links available because your description of the question seems confusing...

Here's my 2 cents:

Taking your question as drawing 4 socks out of 8 (4 pairs) and wanting both to be complete pairs.

Counting method. Total ways to pick 4 socks from 8 is 8C4 = 70. A two pair outcome is decided entirely by which 2 of the 4 pairs you end up with, so favourable cases are 4C2 = 6. Probability is 6/70 = 3/35.

Sequential works too, but it needs two cases because the second sock can either match the first or not.

Case 1. Sock 2 matches sock 1, probability 1/7. Sock 3 can be anything, sock 4 must match it, probability 1/5. This gives 1/35.

Case 2. Sock 2 does not match, probability 6/7. Sock 3 must match one of the two socks already drawn, probability 2/6. Sock 4 must then match the other one, probability 1/5. This gives 2/35.

Adding the two cases, 1/35 + 2/35 = 3/35, which matches the counting answer.

Notice that counting took one line and sequential took casework. When the question only cares about which items you end up with and not the order you drew them in, counting is usually the faster route.

If you actually meant drawing just 2 socks and getting a pair, that one is 4/8C2 = 1/7.
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Quote:

You can tag Bunuel and ask in Practice Questions gp, he is the legend for Quant..

Also, post official gmatclub links available because your description of the question seems confusing...

Here's my 2 cents:

Taking your question as drawing 4 socks out of 8 (4 pairs) and wanting both to be complete pairs.

Counting method. Total ways to pick 4 socks from 8 is 8C4 = 70. A two pair outcome is decided entirely by which 2 of the 4 pairs you end up with, so favourable cases are 4C2 = 6. Probability is 6/70 = 3/35.

Sequential works too, but it needs two cases because the second sock can either match the first or not.

Case 1. Sock 2 matches sock 1, probability 1/7. Sock 3 can be anything, sock 4 must match it, probability 1/5. This gives 1/35.

Case 2. Sock 2 does not match, probability 6/7. Sock 3 must match one of the two socks already drawn, probability 2/6. Sock 4 must then match the other one, probability 1/5. This gives 2/35.

Adding the two cases, 1/35 + 2/35 = 3/35, which matches the counting answer.

Notice that counting took one line and sequential took casework. When the question only cares about which items you end up with and not the order you drew them in, counting is usually the faster route.

If you actually meant drawing just 2 socks and getting a pair, that one is 4/8C2 = 1/7.
Thankyou Man! cleared my doubt
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Hi all! Has anyone taken the GMAT at the Pearson VUE centre in Barakhamba, Delhi? I’d love to hear your experience with the centre.
How is the overall experience? Do they provide noise-cancelling headphones or earplugs? Also, is the centre usually crowded, and roughly how many people are taking the test at a given time?
I’m mainly asking to get a sense of how noisy/busy the centre can get during the exam. Thanks! :)
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Quote:

*Isha2701 writes:*
i all! Has anyone taken the GMAT at the Pearson VUE centre in Barakhamba, Delhi? I’d love to hear your experience with the centre.
How is the overall experience? Do they provide noise-cancelling headphones or earplugs? Also, is the centre usually crowded, and roughly how many people are taking the test at a given time?
I’m mainly asking to get a sense of how noisy/busy the centre can get during the exam. Thanks! :)
You might get a reply here, it’s also better to search in the GMATClub forum people usually post test centre experience there.
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Hello everyone,
I am new to GMAT preparation and have been studying independently this far. I have completed all the questions in the GMAT Official Guide, and last week I took my first official mock test, scoring 450 — considerably below my target score.
I am now looking to enroll in a structured course to strengthen my understanding and improve my preparation strategy. I am based in India and would greatly appreciate recommendations on suitable courses.
Alternatively, if a course is not the best path forward, I would welcome guidance on how to make my self-study more effective going forward.
I would be grateful for any advice, as I am currently unsure of the best way to proceed.
Thank you in advance for your help
Try
https://gmatclub.com/study-plan/
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Hi Guys, does manhattan has gmat focus mocks?
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Hello Team,
We would not have today's call ?
@hr1212 @bhanu29 ?
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Hi,
Unfortunately no.
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gmat-superscore-is-live-how-it-works-5-free-score-sends-461216.html
Super scores are live, if you have taken multiple attempts you would have received an email/will receive soon.
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Quote:

*WA@tsb3144 writes:*
When is free mock ending IST?
A timer is showing when it will end. Tomorrow 12:31
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Need advice:
today i took retake of official mock 2 and my concern is regarding quant section. there weren't any repeats from the first take but unlike my previous two attempts, there were 8 easy qs in quant (4 each in previous attempts)
. the section didn't feel adaptive wherein it kept throwing in relatively easy qs even when the one answered was of medium/hard level which is why there were disproportionately higher easy qs in quant this time. surprisingly though i scored 83 quant which is highest i've gotten in the the three attempts (previously 76 & 78).

the only logic i can decipher is that since i gauged difficulty level of qs from gmatclub since the official score report doesn't give one, the difficulty level of qs set by gmac is not necessarily represented in gmatclub(which guages its difficulty level from responses). hence why, the qs which i may be seeing as easy level may not be the case (though i am skeptical since they genuinely felt easier (it isn't that i found them as such, they actually were by design is what i feel).

what should i takeaway from my confusion? any comments on where my take on things is incorrect? can it be explained by the depleting bank of qs for first two official mocks, given this was my retake of mock#2?

Quote:

Need advice:
today i took retake of official mock 2 and my concern is regarding quant section. there weren't any repeats from the first take but unlike my previous two attempts, there were 8 easy qs in quant (4 each in previous attempts)
. the section didn't feel adaptive wherein it kept throwing in relatively easy qs even when the one answered was of medium/hard level which is why there were disproportionately higher easy qs in quant this time. surprisingly though i scored 83 quant which is highest i've gotten in the the three attempts (previously 76 & 78).

the only logic i can decipher is that since i gauged difficulty level of qs from gmatclub since the official score report doesn't give one, the difficulty level of qs set by gmac is not necessarily represented in gmatclub(which guages its difficulty level from responses). hence why, the qs which i may be seeing as easy level may not be the case (though i am skeptical since they genuinely felt easier (it isn't that i found them as such, they actually were by design is what i feel).

what should i takeaway from my confusion? any comments on where my take on things is incorrect? can it be explained by the depleting bank of qs for first two official mocks, given this was my retake of mock#2?
@bb @hr1212
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Quote:

Need advice:
today i took retake of official mock 2 and my concern is regarding quant section. there weren't any repeats from the first take but unlike my previous two attempts, there were 8 easy qs in quant (4 each in previous attempts)
. the section didn't feel adaptive wherein it kept throwing in relatively easy qs even when the one answered was of medium/hard level which is why there were disproportionately higher easy qs in quant this time. surprisingly though i scored 83 quant which is highest i've gotten in the three attempts (previously 76 & 78).

the only logic i can decipher is that since i gauged difficulty level of qs from gmatclub since the official score report doesn't give one, the difficulty level of qs set by gmac is not necessarily represented in gmatclub(which guages its difficulty level from responses). hence why, the qs which i may be seeing as easy level may not be the case (though i am skeptical since they genuinely felt easier (it isn't that i found them as such, they actually were by design is what i feel).

what should i takeaway from my confusion? how could the score i got this time in quant be explained despite the disproportion of difficulty of qs that i mentioned? any comments on where my take on things is incorrect? can all be explained by the depleting bank of qs for first two official mocks, given this was my retake of mock#2 or any other reason(s)?
I think few more variables plays its role like how many back to back questions you wrong in your mock
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