Q. 244.0( 4 Votes )
In how many ways can 5 letters be posted in 4 letter boxes?
Answer :
Each letter has 4 possible letter boxes option.
So the number of ways in which 5 letters can be posted in 4 letter boxes =4 × 4 × 4 × 4 × 4=45 (Each 4 for each letter.)
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