GMAT Data Sufficiency Basics | Data Sufficiency Tutorials | What is GMAT DS? | DS Questions
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- เผยแพร่เมื่อ 16 ก.ย. 2024
- This video is the starting point for everything GMAT DS. GMAT Data Sufficiency Basics.
About a third to 40% of the questions in the GMAT quant section are data sufficiency questions.
1. What is data sufficiency? What is the structure of a GMAT DS question?
Any data sufficiency question has 3 parts.
Part one: A question stem
Parts 2 and 3: 2 statements.
The task at hand is to evaluate whether the information given in these 2 statements is enough, is sufficient to decisively answer the question asked.
The video walks through the mechanics of answering a GMAT DS question.
What are the answer options for GMAT DS questions?
As with any GMAT quant question, GMAT DS questions also have 5 answer options.
A. Statement 1 ALONE is sufficient; statement 2 is not sufficient.
B. Statement 2 ALONE is sufficient; statement 1 is not sufficient.
C. Statements 1 & 2 TOGETHER are sufficient but are not sufficient independently.
D. Each statement is INDEPENDENTLY sufficient.
E. Statements together are NOT sufficient. Additional data is required.
5 illustrative examples have been solved to help understand these 5 answer options.
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I come here every time I have a doubt, not a single time I have been disappointed. Bravo to the team.
It's our pleasure Machanda! Best wishes for your GMAT!
The best explanation I've encountered so far. Thanks a lot! It's very clear, structured, and straight to the point.
Many thanks for the feedback and the comment, Ella!! 🙌
Really really glad that our videos are helping you 🤗
Best Wishes!! 🚀
Your approach to Data Sufficiency is elegant and comprehensive. Thank you
Thanks for your feedback. Will be adding more GMAT DS questions to this playlist. Watch this playlist for more.
Hello sir. I'm from Bangladesh. I'm a student of class 12. I'm preparing for the BBA admission test in IBA, DU, Bangladesh. So, I have data sufficiency there and I have to finish data sufficiency and Critical reasoning of GMAT. Your video tutorial is fantastic and so perfect for me to understand easily and efficiently. You use easy English, so I can understand your teaching quickly. Thanks for making this type of video. This playlist and your channel will help me a lot to learn. Keep it up.
And yeah, you look a little bit like my late father.
Very clear and elegant approach. Thank you for structuring the DS questions in a comprehensive way
Glad it was helpful!
I am from Bangladesh and your approach is really helpful in DS . i also watched your Basic GMAT math's parts and am waiting for the next. Thank you sir
Glad that it helped. Thanks for your feedback.
We are working on Inequalities videos now. We plan to upload one video each week for the next few weeks on this topic.
Cheers
You are a great teacher! Your approach has helped me understand the basics of data sufficiency. I am very happy!
Happy to help Christopher! :)
@@Wizako Welcome. I'm in Nairobi Kenya and Ill be sitting my GMAT in December. I hope to make great use of your videos sir.
Wishing you only the best! 🚀
You can reach out to us at +91 9500048484 on WhatsApp for any guidance pre/post GMAT. We would be glad to assist you 🤗
I am so glad I found you. Your presentation was precise, straightforward, and distinct from many others I spent time watching. Thank you.
Hello Ekow,
Thank you for your kind words.
We're glad you found our content useful.
Please consider subscribing, and stay tuned for more GMAT content!
Wish you the best for your GMAT Prep.
The best teacher in the world 🥺🙏. Thank you for everything Sir
Love the appreciation! Thank you. Wishing you the absolute best in your prep. Do not hesitate to reach out to us on +91 95000 48484 for any assistance.
Thank you so much for posting this video. Very structured and easy to understand
Glad it was helpful Shivani! 😄
Access all the Data Sufficiency questions in the playlist here: th-cam.com/play/PL3JsYBL14ZluhkLn70KBoVkDbmFpsRC2G.html
You are awesome, thank you. I was struggling with this, I paid 2K USD to understand for private classes as well but my score did not improve. I bumped into this free tutorial and my whole idea and way of thinking changed and I could solve to get 160 in EA.
That is great. Congrats on your EA score!
Good explanation. Thank you, mister.
Sir you are truly inspiration..
Many thanks for your feedback Dinesh! Best wishes for your GMAT!
Really well explained. Thank you!
Thanks for your feedback.
Thank you soo much!! I understood a lot from the way that you taught this topic. Simply amazing
Thanks for watching. Head over to practice-questions.wizako.com/gmat/quant/data-sufficiency/ for free Data Sufficiency practice questions with video explanation.
@@Wizako Have an exam this week, thank you so much for letting me know. =)
Very valuable video! Thank you very much!
Hello Mr.Who
Thanks for your feedback. This playlist has a few interesting data sufficiency practice questions. Pls watch to consolidate GMAT DS - th-cam.com/play/PL3JsYBL14ZluhkLn70KBoVkDbmFpsRC2G.html
great video.Cleared a lot of questions.
Excellent Sir
Thank you so much, very easy explanation and sets the basics and tactics right for Data Sufficiency
You are welcome! Best wishes for your GMAT
Thank you sir for the explanation... 😊😊
Most welcome 😊
Thanku sir for this helpful video 👍
Thanks bro. Very useful video. Break a leg.
Cheers! 🙌
thank you so so much
Thanks a lot , greetings
Thank you for the explanation.
Glad it was helpful! You can check out the entire playlist here: th-cam.com/play/PL3JsYBL14ZluhkLn70KBoVkDbmFpsRC2G.html
Best Wishes!
YOURE AWESOME
Many thanks for your feedback! Glad you liked it.
Cheers and best wishes for your GMAT!
Thank you sir🙌
Most welcome. Best wishes for your GMAT prep.
thank you
i have something to say- if Statement one does not have a unique solution, it isn't independently sufficient so can't we eliminate C as well along with A and D because it specifically says that " both statements are together sufficient and not suffiecient independantly?" We can right? Its just a doubt coz u didn't eliminate the C option at first.
Option C means Information in I and II together give an answer. However, neither statement alone can give you an answer. When we determine that statement I is not sufficient, we still do not know whether the statements together can answer the question.
Let us look at an example
What is the value of x?
1. 3x + 4y = 7
2. 5x + 6y = 11
Statement 1 alone is not sufficient. So, eliminate A and D. And only those two.
Statement 2 alone is also not sufficient. So, eliminate B.
Now, when we combine the statements - we have two equations and two variables such that a1/a2 != b1/b2. So, we will get a unique value for x.
So, statements together answered our question. That scenario is choice C.
Hope this clarifies your doubt. If not, please do not hesitate to post a reply here.
Great video as always sir, I always find problem solving much more difficult than data sufficiency and am not really able to catch where the gap exists, is it just about practice?
Many thanks for your feedback Bhavna!
Yes practice is the key. Unlike DS questions where you're given statements to evaluate, the PS questions requires you to solve the problem fully and arrive at the answer. This skill will definitely come with lot of practice. Cheers and best wishes!
@@Wizako Thank you, very kind of you to reply on a query on such an old video of yours. :)
This is what i can say Mastery over the subject
Many thanks for your kind feedback. Really appreciate it.
Best wishes for your GMAT!
Amazing
Thanks for your feedback
I don’t understand how you got the 7 and the 4 to combine the xy formula for question 3
Multiplying the first equation by 7 will make the coefficient of y in that equation 28.
Multiplying the second equation by 4 will make the coefficient of y in that equation also 28.
If we subtract one equation from the other, we will eliminate the unknown 'y'. Simplify the resulting equation to find the value of x
Essentially the elimination method of solving two linear equations in 2 variables has been used.
Please get back to us if you require further clarifications
Sir Can we take ourselves 7and4 (24:12). There's any rule for this?
Hi,
Yes, you can do it. You're basically just multiplying each equation by a constant 'k' (here 7 and 4)
Cheers!
Can I study this MAT exam??
Do you mean whether you can use this content for MAT preparation? Yes, any videos that teach fundamental concepts can be used for not just the GMAT but also for the MAT