Which one of the following formulae is used for computing the aedes aegypti index at international airpos and sea po-
(Number of bits of aedes aegypti/Total number of man hour) x 100 (Number of houses positive for Aedes aegypti breeding/Total number of houses)x100 (Number of containers positive for Aedes aegypti breeding/Total number of containers)x100 Number of containers positive for Aedes aegypti breeding/Total number of houses)x100