21 july Gre Quants Que

1. 2^-1 + 1/(2)^-1 + (3)^-1 + 1/(3)^-1 = ?


2. A number when divisible by 4, 6 or 7 leaves reminder by 2. What is the remainder, when the same number is divided by 11?


3. Given that a(3b-1) = 0 and a = 0. Find the value of b?


4. If (x+1/x) / (1+1/x) = 99 then Find value of (x-1/x)/(1+1/x) = ?


5. Given that the perimeter of rectangle A > perimeter of rectangle B
Col a: Area of rectangle A
Col b: Area of rectangle B

9. Given that radius and height of a right circular cylinder B are 1/2 the radius and height of cylinder A.
Col A: Volume of Cylinder A
Col B: 4 times the Volume of cylinder B


10. Given N is a positive odd integer between 22 and 99. If the number in the tens digit is double the digit at the units place then the value of N?
A. 70B. 90C. 50D. 30

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


12. Col A: 10% (sqrt (573.28 ))
Col B: sqrt (57.328)


13. When 10^ (22) + 1 is divided by 11, what is the reminder?


14. If ab is not equal not 0, a is not equal to b, & a/b = b/a
Col A: a+b
Col b: 0


15. If (x - y) = odd value and K is an integer, which of the following is always odd?
A. x
B. y
C. k(x-y)
D. (x-y) ^2
E. (x-y+k)


16. Given a series k, k-1, k+3, k+1, k+2. Find the ratio of mean and its median?
A. k+1
B. k
C. 1
D. 1/k
E. 1/(k+1)


17. A seller marks the price of an article 35% more of the wholesale price and he offers some discount. If he wish to get a profit of 21.5%. What is the percentage difference between marked price and selling price?
A. 12.5
B. 10
C. 25
D. 22.5
E. 15


18. What is the value of l-7l + l3l – l-10l =?