hi,
IF u work hard and have strong will, determination and concentration , u can surely make out yar,. so this 24 days will be ur agni pariksha. study hard and my best wishes for ur success frnd.
yeah... if u have done them once then 24 days is sufficient otherwise i dont think so u ll be able to do.....
basically these are the subjective matters and differ from person to person....so u can only judge urself...as where do u stand