Allie and Betty want to know how many 3-letter combinations, such as BMW or DDT, are possible. (Letters are allowed to repeat, as in DDT or BOB.) Allie thinks there can be 26+26+26 three-letter combinations, whereas Betty thinks the number is 26*26*26. Which girl, if ether, is right, and why? Explain your answers clearly and thoroughly, drawing on the meaning of multiplication.

asked by Miles

7 years ago

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there are 26 choices for each letter. So, multiply.

answered by Steve

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Allie and Betty want to know how many 3-letter combinations, such as BMW or DDT, are possible. (Letters are allowed to repeat, as in DDT or BOB.) Allie thinks there can be 26+26+26 three-letter combinations, whereas Betty thinks the number is 26*26*26. Which girl, if ether, is right, and why? Explain your answers clearly and thoroughly, drawing on the meaning of multiplication.

1 answer

there are 26 choices for each letter. So, multiply.

Ask a New Question or answer this question.

Steve · Answer

there are 26 choices for each letter. So, multiply.