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I think I have solved my problem myself. I used the following syntax.
\usepackage{beamerfoils}
\usepackage{bigintcalc}

\MyLogo{%
\ifnum\bigintcalcMod{\insertframenumber}{2}=0
\includegraphics[width=25mm]{LOGO1.pdf}
\else
\includegraphics[width=25mm]{LOGO2.pdf}
\fi
}
It worked for what I want ...

I am new here, and I just started using beamer documentclass.

I would like to use different logos to different frames. Moreover, I would also like to control what logo to use to a particular frame. How can I do all these?

I am using \usetheme{default}, \usepackage{beamerfoils} and \MyLogo in my ...