31.

If the roots, of the equation ax²-px + 54= 0 are in the ratio 2:3, then the value of p is

• 18
  
  

• 21
  
  

• -21
  
  

• 15

If A = {x :x is a letter in word BELOW}, B = {x: x is a letter in word WOOL} and C=A - B, then the number of subsets of C is

• 1
  
  

• 2
  
  

• 3
  
  

• 4

44 cows can graze a field in 9 days. How many less/more cows will graze the same field in 12 days

• 15 cows more
  
  

• 11 cows more
  
  

• 11 cows less
  
  

• 15 cows less

If A's salary is 20% more than that of B, then how much percent of B's salary less than that of A?

• 25%
  
  

• 18%
  
  

• 20%
  
  

• 15%

If two adjacent sides of a square paper are decreased by 20% and 40% respectively, by what percentage does the new area decrease?

• 50

• 52

• 60

• 48

Find the value of $\frac{547527}{82}$if $\frac{547.527}{0.0082}$=x,

• 10x

• 100x

• $\frac{\mathrm{x}}{100}$

• $\frac{\mathrm{x}}{10}$

The fractional equivalent of 57.12% (approx.) is

• $\frac{359}{625}$

• $\frac{357}{625}$

• $\frac{347}{625}$

• $\frac{349}{625}$

Which is greatest among $33\frac{1}{3}$%,$\frac{4}{15}$% and 0.35?

• $\frac{4}{15}$

• 0.35

• Can't be compared

• $33\frac{1}{3}$%

If a * b = a² + b²and  $\mathrm{a}﮲\mathrm{b}$= a² - b², then the value of (5 * 2)$﮲25$ is 

• 225
  
  

• 226
  
  

• 216
  
  

• 215

Unit's digit in 13²⁰⁰³ is

• 3
  
  

• 7
  
  

• 9
  
  

• 1