A notice to one partner operates as a notice to the whole firm. However

Under s.24, notice to a partner who habitually acts in the business of the firm operates as notice to the firm, except where that partner has committed a fraud on the firm, so "Both The notice must have been given to partner who habitually acts in the business of the firm and Notice to a partner who commits a fraud on the firm will not be a notice to the firm are correct."; "Notice to a dormant or a sleeping partner would also suffice." is wrong because notice must go to a partner who habitually acts in the business.