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To use a program compiled for 32 bit, the Android development tools for example, you need the ia32 compatibility package if you're using 64 bit.

First add i386 to your list of architectures, update apt-get then install ia32

 dpkg --add-architecture i386
 apt-get update
 apt-get install ia32-libs

If you need to install a 32 bit version of something, issue the command as normal but with :i386 appended:

 apt-get install libncurses5:i386