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espresso12
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ManifestDreamMBA
For I, 2+2k>2+k => k>0, which is true since k is +ve number. For II, 2-2m>2-m => m<0, which is false since m is +ve number. For the above 2, we know k expression > 1/2 and m expression is < 1/2, so k expression > m expression is true. So I and III are true IMO
hi, answer is only I
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espresso12
could someone please solve this without putting any strategic numbers
The question is discussed here - which-of-the-following-must-be-correct-425773.html
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can anyone solve this using estimation or show the most efficient method?
i know we can write it as 11/159 and then convert all the options. Is there a faster way
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espresso12
can anyone solve this using estimation or show the most efficient method?
i know we can write it as 11/159 and then convert all the options. Is there a faster way
not sure if its efficient but i’d take 11/159.. then when I check options they have 1 as numerator.. so i’ll use inequality property where a/d > b/c if ad>bc.. so 11*16 =176 > 159*1 = 159..so 11/159 greater than 1/16 (take note of how close the diff is..17) and compare 11/159 with 1/15 using similar method..so 165 > 159..but now diff is only 6..so its closer.

sorry.. a/b > c/d if ad>bc.. my gosh
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can this be solved faster only by converting the decimals into fractions? and in case we dont recall the exact fraction, is there any alternative approach?
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espresso12
can this be solved faster only by converting the decimals into fractions? and in case we dont recall the exact fraction, is there any alternative approach?
You can do this by rounding off decimals to not one but two places and then simply cutting them off and you’ll get 1/2 (option A) as final answer.
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shamans
You can do this by rounding off decimals to not one but two places and then simply cutting them off and you’ll get 1/2 (option A) as final answer.
Could you show any 1 value from the equation as an example’ to round off upto two places?
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Problem Solving Butler: January 2025
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charlie1195
Thank you so much

charlie1195
Hey, could we have taken 0.286 as 3 ?

Basically using estimation
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Hlo everyone ...
I want to improve my math (I m terrible in math) ...can any one help?
how to start?
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To me too! My concern is the same as Swati here. Any suggestions/leads would be appreciated.
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R u looking at paid course or gmatninja have free study plan.. or gmatclub also have quant theory and practice post by subjects

For paid course I have only taken ttp. It is quite thorough (and hence lengthy) but if u lack basics, it might work well for u
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