Define rules for reducing karnaugh maps, Computer Engineering

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Define Rules for Reducing Karnaugh Maps?

The rules for reducing Karnaugh Maps (k- maps) are as follows:

All of the 1's in the Karnaugh Map are called as minterms.
The 1's can be condensed in the groups of 2, 4 & 8.
Minterms that are next to each other vertically or horizontally can be grouped together.
Minterms that have been grouped in the Karnaugh Map can be reduced to the boolean terms that are common with all the terms in the group.
The Minterms that cannot be grouped together cannot be reduced.
You may use the minterm for grouping more than once.

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