1.

How many words beginning and ending with a consonant cab be formed by using the letter of word EQUATION.

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Answer:

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Step-by-step explanation:

The word "EQUATION" has 8 letters all of which are unique. For the letters in between the end letters, there are 6 of them (5 VOWELS and the one consonant we didn't use) and can be placed anywhere. That's 6! =720



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