FND THE TRIODE NOS B2IN 1TO 1000..... triode no: 1.they must be three digits no... 2.no repeatatn f digits s allwd... 3.no zeros in d nos.. 4.the 2nd no s twice d 1st one, n 3rd no s thrice d 1st ......i js tried bt ol in vain plz post the c program.........