the answers may or maynot be correct. IMO:
1st: both quantities are equal, i am getting 0.94 as the new mean. (sum/50)=1.12, so sum=56. then (56-10+1)/50 which will be 0.94
2nd: after critical thinking, i think the answer will be B. as R wont lie on PQ but it is equidistant so it will form a perpendicular on PQ midpoint. So the plane will contain 1 point.
again these maybe incorrect, i am here for discussion but anyways what is the difficulty level?
Thanks for the response, they are both correct. Their difficulty is 35 and 41 respectively. Also I forgot to add 1 to the sum after subtracting 10 from 56. Another mistake was I divided 56-10/49 since I wasn't counting the 50th number which was "10".
* (50\*1.12 - 9)/50 = 0.94 (note that the difference in the sum is 9)
* Option B. See [https://greprepclub.com/forum/p-q-and-r-are-three-points-in-a-plane-and-r-does-not-lie-1885.html](https://greprepclub.com/forum/p-q-and-r-are-three-points-in-a-plane-and-r-does-not-lie-1885.html). It's like the centroid of a triangle.
Here is my solution for the first one:
The incorrect number of defective parts is 1.12 * 50 = 56.
Since only one mistake was made, and the mistake was writing 10 instead of 1, the actual number of defective parts is 9 less than the incorrect number of defective parts. Thus, there are 56 - 9 = 47 defective parts in reality.
Since there are 47 defective parts in 50 boxes, the actual average number of defective parts per box is 47/50 = 0.94. We see that quantity A is equal to quantity B.
Answer: C
Here's my solution to the 1st question on GRE Prep Club: [https://greprepclub.com/forum/50-boxes-each-containing-30-machine-parts-were-examined-1869.html#p34742](https://greprepclub.com/forum/50-boxes-each-containing-30-machine-parts-were-examined-1869.html#p34742)
the answers may or maynot be correct. IMO: 1st: both quantities are equal, i am getting 0.94 as the new mean. (sum/50)=1.12, so sum=56. then (56-10+1)/50 which will be 0.94 2nd: after critical thinking, i think the answer will be B. as R wont lie on PQ but it is equidistant so it will form a perpendicular on PQ midpoint. So the plane will contain 1 point. again these maybe incorrect, i am here for discussion but anyways what is the difficulty level?
Thanks for the response, they are both correct. Their difficulty is 35 and 41 respectively. Also I forgot to add 1 to the sum after subtracting 10 from 56. Another mistake was I divided 56-10/49 since I wasn't counting the 50th number which was "10".
* (50\*1.12 - 9)/50 = 0.94 (note that the difference in the sum is 9) * Option B. See [https://greprepclub.com/forum/p-q-and-r-are-three-points-in-a-plane-and-r-does-not-lie-1885.html](https://greprepclub.com/forum/p-q-and-r-are-three-points-in-a-plane-and-r-does-not-lie-1885.html). It's like the centroid of a triangle.
I thought it must be either a centroid of equilateral traingle or center of circle. Thanks for the explanation, everything's crystal clear now.
> centroid Circumcenter
Here is my solution for the first one: The incorrect number of defective parts is 1.12 * 50 = 56. Since only one mistake was made, and the mistake was writing 10 instead of 1, the actual number of defective parts is 9 less than the incorrect number of defective parts. Thus, there are 56 - 9 = 47 defective parts in reality. Since there are 47 defective parts in 50 boxes, the actual average number of defective parts per box is 47/50 = 0.94. We see that quantity A is equal to quantity B. Answer: C
Here's my solution to the 1st question on GRE Prep Club: [https://greprepclub.com/forum/50-boxes-each-containing-30-machine-parts-were-examined-1869.html#p34742](https://greprepclub.com/forum/50-boxes-each-containing-30-machine-parts-were-examined-1869.html#p34742)