Charan entered the theatre. The picture had already begun. Charan was unable to find his seat initially. What had happened? Why?

Three friends went to a hotel and had breakfast to their taste, paying ₹16, ₹17 and ₹21 respectively i) Find their mean expenditure. ii) If they have spent 3 times the amount that they have already spent, what would their mean expenditure be? iii) If the hotel manager offers 50% discount, what would their mean expenditure be? iv) Do you notice any relationship between the change in expenditure and the change n mean expenditure?

Why did Mendeleeff had to leave certain blank spaces in his periodic table ? What is your explanation for this ?

The acceleration of a particle is given by a (t)=(3.00 m//s^(2)-(2.00 m/s^(3)) )t. (a) Find the initial speed v_(0) such that the particle will have the same x -coordinate at t =5.00 as it had at t=0. (b)What will be the velocity at t =5.00s?