determine the coordinate of a points which is equidistant from the points (1,2)and(3,4) and the shortest distance from die the line joining the points (1,2)amd (3,4) to the required points is√2

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?
purchased 5 pcs computer @ 25000 from furniture world 3 pcs for office , 2 pcs for personal in tally