27*39 First multiply 7*9=63 write '3' and take 6 as carry. Then cross multiplication i.e. multiply '7*3'=21 and '9*2'=18 add '21+18+6(carry from first multiplication)' = 45....
I am generally very good at remembering things, so here are a few tips: 1. Know how many you need to learn. Write them all down on one page and number them. Say, for example, you have 20. Then write the...
Provisions:There are some expenses and losses which are specific to incur, but their amount cannot be known with certainty as they are not yet incurred. It is necessary to make provision for such certain...