An answer does not state a defense which admits the contract, and alleges that the broker did not use his best efforts and act in good faith, but fraudulently induced the defendant to agree to an exchange which he knew was not worth as much as defendant's property, is insufficient, where no direct averment of facts showing fraud is made. Rabb v. Johnson, 28 Ind. App. 665, 63 N. E. 580; Meyer v. Payne, 43 N. Y. S. 133, 13 N. Y. App. Div. 332.