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NDA 2014

Exam: NDA
Year: 2014
Subject: Mathematics
Chapter: Permutation and Combination

NDA 2014 · Mathematics · Permutation and Combination

What is the number of ways in which one can post 5 letters in 7...

What is the number of ways in which one can post 5 letters in 7 letter boxes?

Options

A $7^5$
B $3^5$
C $5^7$
D2520

Correct answer

A. $7^5$

Step-by-step solution

The correct answer is option(A)

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