How much rupees stamp should i paste?

I want to send a greeting card to my friend from kumbakonam to chennai through much rupees stamp should i paste on it..i dont have time to ask in the post office.i plan to post it in the postbox near my house..the greeting card is quite big. 30cm *15cm in size..Can i post it in a post box?

Housing Loan Interest exemption in the name of spouse (house wife) and instalment paid by husband?

Property in the name of housewife. Can the Husband get deductions for housing loan interest?

I have taken housing loan from a bank, myself being an applicant and my wife is a co-applicant. She is housewife. She has no income. While, at the time of Registration of my flat, it was registered in the name of my wife. The repayment of housing loan instament is being paid by me from my own income. Can I claim housing loan intrests benefits, as per income tax benefit?