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swethav12
12-08-2004, 07:48 PM
4-n *6
4-n * 5
5.Which of the following symbols should be substituted for * to make both of the statements above true for all integers n such that -2< n≤3?
(A) ≤ (B) < (C) = (D) > (E) ≥

6.In a soccer league, If there were 10 teams and each team played each of the other teams 16 times, how many games did each team play?
(A) 144 (B) 140 (C) 134 (D) 125 (E) 106


7.A sample of employees were tested on data-entry skills for one hour, and the number of errors (x) they made and the percent of employess (p) making x errors were recorded as follows.

8. What was the median number of errors in the sample?
(A) 3 (B) 3.5 (C) 4 (D) 4.5 (E) It cannot be determined from the information given.

23. If in an experiment the probabilities of obtaining the values are , respectively, then the expected value is defined as For the values and their corresponding probabilities in the table above, what is the expected value?
(A)350 (B)320 (C)300 (D)270 (E)250

34.In an insurance company, each policy has a paper record and an electric record. For those policies having incorrect paper record, 60% also having incorrect electric record; For those policies having incorrect electric record, 75% also having incorrect electric record. 3% of all policies have both incorrect paper and incorrect electric records. If we randomly pick out one policy, what's the probability that the one having both correct paper and correct electric records?
(A)0.80 (B)0.94 (C)0.75 (D)0.88 (E)0.92

35. There are 1200 respondents to a poll, each favoring their preference for candidates A, B,
and C. 54% favored A, 48% favored B, and 42% favored C, and there is 30% favored both A and B. what's the largest possible number of respondents favoring C, but not C & B, nor C & A?
(A)25% (B)30% (C)28% (D)38% (E)40%

38. The vicar returns from his allotment with a small bag of tomatoes. To the first parishioner he meets he gives half the tomatoes plus half a tomato, to the second he gives half what he has left plus half a tomato and to the third he gives half what he has left plus half a tomato. He has then distributed all his bag of tomatoes. How many tomatoes did he initially have in the bag?

swethav12
12-09-2004, 03:20 AM
A sample of employees were tested on data-entry skills for one hour, and the number of errors (x) they made and the percent of employess (p) making x errors were recorded as follows.
http://www.downdowndown.net/images/gremath_07.gif
8. What was the median number of errors in the sample?
(A) 3 (B) 3.5 (C) 4 (D) 4.5 (E) It cannot be determined from the information given.

23. If in an experiment the probabilities of obtaining the values http://www.downdowndown.net/images/gremath_21.gifarehttp://www.downdowndown.net/images/gremath_22.gif , respectively, then the expected value is defined ashttp://www.downdowndown.net/images/gremath_23.gif For the values and their corresponding probabilities in the table above, what is the expected value?
(A)350 (B)320 (C)300 (D)270 (E)250

bigduke
12-09-2004, 06:23 AM
5. A
6. A
8. C
23. Where's the table?
34. C ?
35. Are you sure thats all the info we have ?
38. 7 tomatoes

Let me know if I got them correct, I'll post the explanation soon after.

lorcar
12-09-2004, 02:00 PM
Quest 34 I got solution 94%



The percentages given represent the same things, so we can express them as percentage of the total



Paper Wrong: (3%/60%) of the total = 5%

Electronic wrong: (3%/75%) of the total= 4%



The percentage of the TOTAL wrong is then



5+4-3= 6%



1- 6%=94%





Could some explain me the tomatoes QUESTION?

bigduke
12-09-2004, 02:18 PM
ok the tomatoes ques.

1. you start with x tomatoes
you give away (x+1)/2
you are left with (x-1)/2
2. now you start with (x-1)/2
give away (x+1)/4
you are left with (x-3)/4
3. you now have only (x-3)/4 left
give away (x+1)/8
left with 0 (as per the problem)

so (x-3)/4 - (x+1)/8 = 0
x comes out to be 7 :)