Prove that the relation R in the set of integer Z defined by R={(x,y):x-y is an integer } is an equivalence relation?
SIr can u pls help me by telling the questions which are repeated every year
Dear Sir,
Suppose we are a Manufacturer and exporter, if we purchased a consumable goods from unregistered party, so how we maintain their accounts and if we wants to take a Input Vat Refund?