Numbers $\frac{-11}{20}$,$\frac{7}{-15}$,$\frac{17}{30}$and$\frac{-3}{10}$are written in descending order as 

• $\frac{17}{-30}$>$\frac{-11}{20}$>$\frac{-3}{10}$>$\frac{7}{-15}$

• $\frac{-3}{10}$>$\frac{7}{-15}$>$\frac{-11}{20}$>$\frac{17}{-30}$

• $\frac{-3}{10}$>$\frac{-11}{20}$>$\frac{7}{-15}$>$\frac{17}{-30}$

• $\frac{-11}{20}$>$\frac{17}{-30}$>$\frac{-3}{10}$>$\frac{7}{-15}$

What should be subtracted from $\frac{-5}{7}$to get -1?

• $\frac{-2}{7}$

• $\frac{4}{7}$

• $\frac{2}{7}$

• $\frac{-4}{7}$

If a= $\sqrt{{\left(2013\right)}^2+2013+2014}$, then the value of a is 

• 1002

• 1007

• 2013

• 2014

4.

If a, b and c are different integers such that a < b < c < 0, then which of the following statements is true?

• a + c < b

• ab < c

• a + b > c

• ac > ab

In standard form, the number 829030000 is expressed as k x 10ⁿ. The value of k + n is

• 90.903

• 16.2903

• 15.2903

• 91.903

LCM of two prime numbers x and y, ( x > y), is 161. The value of 3y-x is

• 2

• -2

• -5

• 62

The value of $\sqrt[3]{500}\times \sqrt[3]{16}$ is 

• 16

• 20

• 25

• 18

If x is an integer, then (x+1)⁴-(x-1)⁴ is always divisible by

• 6

• 8

• 9

• 12

What is the probability that a randomly selected factor from positive factors of 72 is less than 11?

• $\frac{5}{12}$

• $\frac{7}{11}$

• $\frac{7}{12}$

• $\frac{7}{10}$

The hundreds digit of a three-digit number is 7 more than the units digit. The digits of the number are reversed and the resulting number is subtracted from the original three-digit number. The units digit of the final number so obtained is

• 0

• 1

• 2

• 3