Questions asked by Jaya

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• In a gas S and O are 50%by mass .What is their mol ratio?
  
• F(x)=root of (x^2+16) and (f(k))^2=20,k>0.what is the value of f(k+1)?
  
• N2+3H2 gives 2NH3.what is the equivalent mass of nitrogen in NH3?
  
• How can we find tan inverse of a number without calculator,for eg. Tan inverse of -1 ?
  
• Consider polynomial ax^2+bx+c such that p^2(0)+p^2(1)+p^2(2)+166=6p(0)+12p(1)+22p(2).then find whether foloeing are correct (A) a-b+c=2.(B)min of p(x)=2?
  
• Consider equation ax^2+bx+c=0 whose roots are x and y.Then find quadratic equation whose roots are x/y and y/x?
  
• Find the no. Of arrangements of letters of the world SALOON if two 'O's do not come together?
  
• Tgere are 10 girls and 8 boys in a class.a list of speakers consisting of 8 girls and 6 boys is to be prepared.mr. ravi refuses to speak if Rani speaks.And Raani refuses to speak if Radha speaks.Find no. Of ways list can be made ?