Question

why we use secondary memory if we already have primary memory (class9 level) 50 points

Answer 1

primary memory is so costlier such that it costs nearly 1000₹ per gb and  it id not easily transferable but secondary memory is cheaper and easier to operste and the actual thing is that  in primary mem the data wll beerased whn the power is switched off but in sec mem the data add wll be stored permanently 

Answer 2

pls see the above photo