Question

A cfl bulb stays lit for 6000 hours.a normal bulb stays lit for 1000 hours.if 3 cfl bulbs are needed in a year then how many normal bulbs are needed in a year.?

 Question No. 20 

Ex2.5 ,5

• Inverse trignometry
• 3 sin^-1 x = sin^-1(3x-4x^3)
  

work sheets

this is request to you please stop the add due to add i cant read

question no 34

Circle

Prove that oppsite side of qudrilaterl cricuminscrbing a circle subtend suplementry angle at the centre of the circle

computer accsories and networking material comes under which head in tally

Evaluate (998)³ using suitable identities