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In these video we discuss various ideas in Permutation and Combination – like
a. Arranging n things on n positions – in a row or in a circle.
b. Choosing n things from many.
c. Making groups from a bigger group.
d. Natural Number Solution and Whole Number Solution of an equation with Multiple Variable in degree 1.
e. Dearrangement
And other related ideas.

These videos belong to the Modern Maths section of Quantitative Aptitude for the Common Admission Test (CAT). Please note that CAT 2009 is going to be online and a computer based test.