14-july-GRE - Quants

14-july-GRE - Quants
Quant:

1. Three machines can do a work in 4 hrs, 6 hrs, 8 hrs respectively. If all the 3 machines work together and complete the work, what is the part of the work done by the fastest machine?


2. If W = 10^4, Y = 10^-4 and Z = (W+Y)/3W, then the value of Z = ?


3. Col A: number of prime factors of 300
Col B: number of prime factors of 500


4. ColA: modulus (-7) + modulus(3) - modulus(-10)
ColB: 0


5. ColA: 3^(-8 ) - 3^(-9) - 3^ (-9)
ColB : 3^ (-9)


6. Given an = a(n-1) - a(n-2), a1 = -5 & a2 = 4. For n>2, what is the sum of first 100 terms of n. { i.e (sigma (an) from n= 3 to 103}.
(Here n, n-1, n-2, 1, 2, 100 are suffixes).


7. Given that, there are 500 people in a town and 50% own computers and 26% own computers with internet access. Whatt is the percentage of people who have computers and don’t have access to internet?



8. Col A: Volume of a cube of surface area 150*y^2
Col B: 125*y^3.


9. There are 15 employes in company, the mean of salaries of the least played seven employes is given and the mean of the salaries of the highest payed employees is given
Col A: the median of the salaries of the 15 employes.
Col B: some value very close to the mean of the above given means was given.


10. There are 'X' number of students in a class. 'Y' number of them play football and 'Z' play basket ball. If 'N' number of them play niether then what is the number of students who play both?
(Question is similar to this with numerical values given in place of X, Y, Z & N)


11. Col A: 0.625% of 25
Col B: 6.25% of 25

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nilam



Joined: 16 Jun 2008
Posts: 10
Posted: Wed Jul 16, 2008 5:41 pm Post subject:

1.
2. 2/3
3. A
4. C
5. C
6.
7. 24
8. C
9.
10.
11. B

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sriec12



Joined: 29 May 2008
Posts: 7
Posted: Thu Jul 17, 2008 4:22 am Post subject:

1)6/13
2)(10^8+1)/(3*10^
4)c
5)c
6)0
7)74%
c
9)d
10)this one is easy anybody can solve it
let p plays both football and basketball
foot ball =y-p
basket ball =z-p
x=(y-p)+p+(z-p)+n
we can calculate p from this expression

11)b

hey if any thing wrong plz correct me, my id gretoefl8@gmail.com