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In how many ways, can zero or more letters be selected form the letters AAAAA?

Correct Answer: 6

Explanation:

Selecting zero'A's= 1


Selecting one 'A's = 1


Selecting two 'A's = 1


Selecting three 'A's = 1


Selecting four 'A's = 1


Selecting five 'A's = 1


=> Required number ofways =6


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