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Multiplication of Matrices

How many comb...

Question

How many combinations can be made of $7$ identical shirts?

A

1

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B

7

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C

21

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D

128

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Solution

The correct option is B 7
The shirts are alike. In combination $1 shirt or 2 shirts or 3 shirts or ... 7 shirts$ are identical.
Hence 1 combination for each case can be made.
Hence, the number of combinations = $1 + 1 + 1 + 1 + 1 + 1 + 1 = 7$

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