DS Question - answer choices are as normal DS choices
A jar contains 8 red marbles and y white marbles. If Joan takes 2 random marbles from the jar, is it more likely that she will have 2 red marbles than that she will have one marble of each color?
(1) y ≤ 8
(2) y ≥ 4
[spoiler]OA is B i.e. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.[/spoiler]
My doubt is
if y < 8 then the likely hood of picking 2 red marbles > one marble of each color
if y = 8 then the likely hood of picking 2 red marbles = one marble of each color
if y > 8 then the likely hood of picking 2 red marbles < one marble of each color
Hence I marked answer as E without doing any mathematical calculation of prabablity
Can anyone clarify why this is wrong ?
The solution given is in a mathematical form which comes to conclusion that y > 3.5 for likely hood of picking 2 red marbles > one marble of each color, which is fine but I am not able to co-relate it with logical understanding.
BTW, the source of this ques is MGMAT CAT
A jar contains 8 red marbles and y white marbles. If Joan takes 2 random marbles from the jar, is it more likely that she will have 2 red marbles than that she will have one marble of each color?
(1) y ≤ 8
(2) y ≥ 4
[spoiler]OA is B i.e. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.[/spoiler]
My doubt is
if y < 8 then the likely hood of picking 2 red marbles > one marble of each color
if y = 8 then the likely hood of picking 2 red marbles = one marble of each color
if y > 8 then the likely hood of picking 2 red marbles < one marble of each color
Hence I marked answer as E without doing any mathematical calculation of prabablity
Can anyone clarify why this is wrong ?
The solution given is in a mathematical form which comes to conclusion that y > 3.5 for likely hood of picking 2 red marbles > one marble of each color, which is fine but I am not able to co-relate it with logical understanding.
BTW, the source of this ques is MGMAT CAT
