Question

Find the number of ways in which $6$ letters can be posted in $10$ letterboxes.

• A. ${}^{10}{P}_6$
• B. ${10}^6$
• C. ${}^{10}{C}_6$
• D. none of these

Answer 1

Answer: (B)

${10}^6$

$6$ letter - $10$ letter boxes

Each letter can be posted in $10$ Ways

$\Rightarrow 6$ letters can be posted in

$=10\times 10\times 10\times 10\times 10\times 10$ Ways

$={10}^6$ Ways