(2)The quorum for a meeting of the Board of Directors of a company shall be one-third of its total strength (any fraction contained in that one-third being rounded off as one), or two Directors, whichever is higher:Provided that where at any time the number of interested Directors exceeds or is equal to two-thirds of the total strength, the number of the remaining Directors, that is to say, the number of the Directors who are not interested [present at the meeting being not less than two,] shall be the quorum during such time.