In how many ways 4 letters can be posted in two post boxes?

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In how many ways 4 letters can be posted in two post boxes?..

Answer / robin

(4C0+4C1+4C2+4C3+4C4)*2=32

Is This Answer Correct ?    5 Yes 13 No

In how many ways 4 letters can be posted in two post boxes?..

Answer / sasi

5

Is This Answer Correct ?    1 Yes 10 No

In how many ways 4 letters can be posted in two post boxes?..

Answer / guest

1+2+3+4=10 ways

Is This Answer Correct ?    4 Yes 26 No

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