Leaving job in Probation period

I joined a private firm 20 days back and now I got a better offer from another firm and I want to join it. In my offer letter with current firm it is mentioned that I will have 6 months of probation period. Please see below exact mention - "As an Associate BI Consultant you will be on probation for an initial period of 6 months from the date of joining. During this period, your performance will be reviewed periodically and upon successful completion of your probation period, your services in the Company will be explicitly confirmed, in writing, else your probation period will be deemed to have been extended further. During the period of probation, your services will be liable to be terminated at any time without any notice or payment in lieu of notice and without assigning any reasons." And later in another para it is mention about that I have to serve 3 months notice period, but it is not mention that in probation I have to serve. My question is can I resign and leave this firm in my probation period? Will I ahve to serve teh 3 months notice period?